Finding the Fourth Proportional to 23,498.72, 32,430.78 and 15,008.64

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.72 : 32,430.78 = 15,008.64 : x
2. Step 2: Convert to fraction form
   23,498.72/32,430.78 = 15,008.64/x
3. Step 3: Cross multiply
   23,498.72x = 32,430.78 × 15,008.64
4. Step 4: Simplify right side
   23,498.72x = 486,741,901.94
5. Step 5: Solve for x
   x = 486,741,901.94/23,498.72
6. Step 6: Final answer
   x = 20,713.55