Finding the Fourth Proportional to 11,689.82, 16,131.94 and 6,384.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.82 : 16,131.94 = 6,384.72 : x
2. Step 2: Convert to fraction form
   11,689.82/16,131.94 = 6,384.72/x
3. Step 3: Cross multiply
   11,689.82x = 16,131.94 × 6,384.72
4. Step 4: Simplify right side
   11,689.82x = 102,997,919.96
5. Step 5: Solve for x
   x = 102,997,919.96/11,689.82
6. Step 6: Final answer
   x = 8,810.91