Finding the Fourth Proportional to 23,839.57, 32,898.72 and 13,229.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,839.57 : 32,898.72 = 13,229.20 : x
2. Step 2: Convert to fraction form
   23,839.57/32,898.72 = 13,229.20/x
3. Step 3: Cross multiply
   23,839.57x = 32,898.72 × 13,229.20
4. Step 4: Simplify right side
   23,839.57x = 435,223,746.62
5. Step 5: Solve for x
   x = 435,223,746.62/23,839.57
6. Step 6: Final answer
   x = 18,256.36