A very weird spot 10 20 party

[James282]

Total donk idiot with 6k stack (74/40 or so) minraises UTG, 3 callers and I make it 240 with AQ and 2400 stack. Folded to the third cold caller who is 27/7 and seems to play well postflop(he has a name that leads me to believe he is a 2+2er) who makes it 600. His stack is 2k. What's the play here? Easy fold? Push? Calling seems to be worst, but I don't know for sure. You rarely see someone be the third cold caller and come over the top of a raise like this.
-James