I have track lighting in my kitchen. Currently 3 bulbs are working and 1 is not. I tried replacing the burned out bulb with a new one but the 1 light is still not working. Any suggestions/help will be greatly appreciated.

Verify you are not installing 180 degrees out.
Look at the contacts and see if they are bent/burnt. You should have 2 contacts on one side, and 1 contact on the other side of the track.
Try a continuity test to be sure the problem is not within the fixture, also check bulb contacts.

Verify you are not installing 180 degrees out.
Look at the contacts and see if they are bent/burnt. You should have 2 contacts on one side, and 1 contact on the other side of the track.
Try a continuity test to be sure the problem is not within the fixture, also check bulb contacts.

I am not sure what you mean by installing 180 degrees out. I will check out your other suggestions when I return home today. Thanks.