Finding the Fourth Proportional to 23,520.24, 32,457.33 and 12,909.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,520.24 : 32,457.33 = 12,909.78 : x
2. Step 2: Convert to fraction form
   23,520.24/32,457.33 = 12,909.78/x
3. Step 3: Cross multiply
   23,520.24x = 32,457.33 × 12,909.78
4. Step 4: Simplify right side
   23,520.24x = 419,016,989.69
5. Step 5: Solve for x
   x = 419,016,989.69/23,520.24
6. Step 6: Final answer
   x = 17,815.17