Finding the Fourth Proportional to 14,665.92, 20,238.72 and 8,292.40

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.92 : 20,238.72 = 8,292.40 : x
2. Step 2: Convert to fraction form
   14,665.92/20,238.72 = 8,292.40/x
3. Step 3: Cross multiply
   14,665.92x = 20,238.72 × 8,292.40
4. Step 4: Simplify right side
   14,665.92x = 167,827,561.73
5. Step 5: Solve for x
   x = 167,827,561.73/14,665.92
6. Step 6: Final answer
   x = 11,443.37