Finding the Fourth Proportional to 21,487.32, 32,200.38 and 16,785.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,487.32 : 32,200.38 = 16,785.72 : x
2. Step 2: Convert to fraction form
   21,487.32/32,200.38 = 16,785.72/x
3. Step 3: Cross multiply
   21,487.32x = 32,200.38 × 16,785.72
4. Step 4: Simplify right side
   21,487.32x = 540,506,562.57
5. Step 5: Solve for x
   x = 540,506,562.57/21,487.32
6. Step 6: Final answer
   x = 25,154.68