Finding the Fourth Proportional to 12,087.29, 16,680.42 and 6,782.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.29 : 16,680.42 = 6,782.10 : x
2. Step 2: Convert to fraction form
   12,087.29/16,680.42 = 6,782.10/x
3. Step 3: Cross multiply
   12,087.29x = 16,680.42 × 6,782.10
4. Step 4: Simplify right side
   12,087.29x = 113,128,276.48
5. Step 5: Solve for x
   x = 113,128,276.48/12,087.29
6. Step 6: Final answer
   x = 9,359.28