Finding the Fourth Proportional to 23,288.71, 32,139.20 and 13,081.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,288.71 : 32,139.20 = 13,081.55 : x
2. Step 2: Convert to fraction form
   23,288.71/32,139.20 = 13,081.55/x
3. Step 3: Cross multiply
   23,288.71x = 32,139.20 × 13,081.55
4. Step 4: Simplify right side
   23,288.71x = 420,430,423.77
5. Step 5: Solve for x
   x = 420,430,423.77/23,288.71
6. Step 6: Final answer
   x = 18,052.97