Finding the Fourth Proportional to 23,385.72, 32,247.72 and 15,417.76

Step by Step Solution

1. Step 1: Write the proportion equation
   23,385.72 : 32,247.72 = 15,417.76 : x
2. Step 2: Convert to fraction form
   23,385.72/32,247.72 = 15,417.76/x
3. Step 3: Cross multiply
   23,385.72x = 32,247.72 × 15,417.76
4. Step 4: Simplify right side
   23,385.72x = 497,187,607.51
5. Step 5: Solve for x
   x = 497,187,607.51/23,385.72
6. Step 6: Final answer
   x = 21,260.31