Finding the Fourth Proportional to 11,689.72, 16,131.78 and 6,384.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.72 : 16,131.78 = 6,384.52 : x
2. Step 2: Convert to fraction form
   11,689.72/16,131.78 = 6,384.52/x
3. Step 3: Cross multiply
   11,689.72x = 16,131.78 × 6,384.52
4. Step 4: Simplify right side
   11,689.72x = 102,993,672.05
5. Step 5: Solve for x
   x = 102,993,672.05/11,689.72
6. Step 6: Final answer
   x = 8,810.62