Does the combination of the Follow-up Shot infusion and Dual Kinetic Control utility wild talent with Telekinetic Blast use a total of 4 projectiles, and does the projectiles affect the same initial target or can target another creature?
You can "blast" up to 4 objects (in pairs) at up to 2 targets.
Telekinetic Blast allows you to wield one unattended object at one target.
Dual Kinetic Control allows you to do the same amount of damage with two objects.
Follow-up Shot allows you to repeat this, but makes no requirements that it be against the same target. Your damage for this second attack is (most likely) reduced.