Finding the Fourth Proportional to 10,863.52, 16,197.98 and 10,666.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.52 : 16,197.98 = 10,666.69 : x
2. Step 2: Convert to fraction form
   10,863.52/16,197.98 = 10,666.69/x
3. Step 3: Cross multiply
   10,863.52x = 16,197.98 × 10,666.69
4. Step 4: Simplify right side
   10,863.52x = 172,778,737.46
5. Step 5: Solve for x
   x = 172,778,737.46/10,863.52
6. Step 6: Final answer
   x = 15,904.49