Fold AKo 4 handed?

[pokeriseasy]

Sorry about not using a converter, but I don't have the HH.

4 handed in the PCA DSO, I get AKo in the BB w/3450 blinds are 25/50. UTG opens 3xbb he has 2300, SB w/3700 calls I make it 600, utg folds, SB makes it 1600.

I've probably raised the most at the table and this is my 3rd 3bet and I 4bet shoved ATs against KK. Villain has 3bet several times but this is his first 4bet.