Finding the Fourth Proportional to 12,002.86, 17,966.61 and 8,715.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.86 : 17,966.61 = 8,715.07 : x
2. Step 2: Convert to fraction form
   12,002.86/17,966.61 = 8,715.07/x
3. Step 3: Cross multiply
   12,002.86x = 17,966.61 × 8,715.07
4. Step 4: Simplify right side
   12,002.86x = 156,580,263.81
5. Step 5: Solve for x
   x = 156,580,263.81/12,002.86
6. Step 6: Final answer
   x = 13,045.25