The original price is 19419 and the Increase is 5.5%. To get the amount of increase multiply the two together.
Convert 5.5% to a decimal by dividing by 100 (move decimal 2 places left)
5.5% = .055
.055 × 19419 = $1,068.05
That is the amount of increase. Add it to the original AL price to find the new price.
1068.05 + 19419 = $20,487.05