The amount of the adjusting entry on December 31 is: $3400.
Using this formula
Amount of adjusting entry=Prepaid rent/ Number of months
Let plug in the formula
Amount of adjusting entry=$10,200/3 months
Amount of adjusting entry=$3,400
Therefore the amount of the adjusting entry on December 31 is: $3400.
Learn more about adjusting entry here:https://brainly.com/question/13933471
#SPJ1