calling all-in with AK (again)

[dedor]

this is my second post this week of a very similar problem that happened to me deep in a tournament.

55$ NL tournament , 890 entrants, last 19 players
I am third in chips.
the chip leader acts after me. he used his big stack to push players. he made some moves in the past with nothing.

PokerStars Game #9389453620: Tournament #47144051, $50+$5 Hold'em No Limit - Level XVII (4000/8000)

Seat 1: SB (313306 in chips)
Seat 2: BB (39820 in chips)
Seat 4: UTG (314770 in chips)
Seat 5: UTG+1 (52809 in chips)
Seat 7: CO (22418 in chips)
Seat 9: HERO(171510 in chips)

Dealt to HERO[As Kd]
preflop: 3 fold, hero raises 16000 to 24000, SB raises 288906 to 312906 and is all-in, BB calls 31420 and is all-in
HERO- ?

now at first it looks like a fold after 2 all-ins, but I know the big stack can do this with any 2, and If i win the pot against him it will make me the massive chip leader. (the BB was short stack and had to call almost with any decent hand.)
on the other hand - is it wise to risk the tournament on this hand.
what should be my range to call this?