Finding the Fourth Proportional to 12,499.92, 17,241.76 and 8,016.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.92 : 17,241.76 = 8,016.57 : x
2. Step 2: Convert to fraction form
   12,499.92/17,241.76 = 8,016.57/x
3. Step 3: Cross multiply
   12,499.92x = 17,241.76 × 8,016.57
4. Step 4: Simplify right side
   12,499.92x = 138,219,785.98
5. Step 5: Solve for x
   x = 138,219,785.98/12,499.92
6. Step 6: Final answer
   x = 11,057.65