Finding the Fourth Proportional to 23,628.50, 32,607.05 and 13,557.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,628.50 : 32,607.05 = 13,557.15 : x
2. Step 2: Convert to fraction form
   23,628.50/32,607.05 = 13,557.15/x
3. Step 3: Cross multiply
   23,628.50x = 32,607.05 × 13,557.15
4. Step 4: Simplify right side
   23,628.50x = 442,058,600.12
5. Step 5: Solve for x
   x = 442,058,600.12/23,628.50
6. Step 6: Final answer
   x = 18,708.71