It depends on the temperature in your fridge. The colder it is - fewer will hatch. The longer they are in the
fridge - fewer will hatch. Why? Because if it's to cold, it could possibly kill the fertilized blastoderm. However,
if I was in a situation like your's, where I had fertile eggs in the fridge and the dad of them went missing, I would
throw them in the incubator in a heart beat. So in your case, sure. Hatch them - but the hatch rates aren't
guaranteed. Take them out of the fridge and let them slowly warm to room temperature before shoving them
into the 'bator. I wish you luck, and you have to let us know how it goes!
Rebecca