Finding the Fourth Proportional to 8,833.52, 13,184.17 and 8,687.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,833.52 : 13,184.17 = 8,687.72 : x
2. Step 2: Convert to fraction form
   8,833.52/13,184.17 = 8,687.72/x
3. Step 3: Cross multiply
   8,833.52x = 13,184.17 × 8,687.72
4. Step 4: Simplify right side
   8,833.52x = 114,540,377.39
5. Step 5: Solve for x
   x = 114,540,377.39/8,833.52
6. Step 6: Final answer
   x = 12,966.56