Other things to find out if you can is what size conduit you have? Typical sizes are 1/2 inch and 3/4 inch.
Then what size wire is used. Typical sizes are 14 gauge and 12 gauge. To confirm your wire size, go to your circuit breaker panel and turn off the breaker which turns off the ceiling fan. There should be a number printed on this breaker. Like 15 or 20. This is the "amperage" of the breaker and determines what size wire should be used. So 15? 20?
Then with just this breaker turned off, might want to see what all this breaker controls in addition to the ceiling fan. There is a possibility that the additional lights could overload the circuit, but probably not.
If you know the total wattage of each track lighting fixture, that would help. Or the wattage of each bulb and how many bulbs you plan to have on each track light.