Finding the Fourth Proportional to 12,385.32, 17,092.16 and 8,856.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.32 : 17,092.16 = 8,856.96 : x
2. Step 2: Convert to fraction form
   12,385.32/17,092.16 = 8,856.96/x
3. Step 3: Cross multiply
   12,385.32x = 17,092.16 × 8,856.96
4. Step 4: Simplify right side
   12,385.32x = 151,384,577.43
5. Step 5: Solve for x
   x = 151,384,577.43/12,385.32
6. Step 6: Final answer
   x = 12,222.90