Finding the Fourth Proportional to 12,087.78, 16,681.27 and 6,782.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.78 : 16,681.27 = 6,782.48 : x
2. Step 2: Convert to fraction form
   12,087.78/16,681.27 = 6,782.48/x
3. Step 3: Cross multiply
   12,087.78x = 16,681.27 × 6,782.48
4. Step 4: Simplify right side
   12,087.78x = 113,140,429.82
5. Step 5: Solve for x
   x = 113,140,429.82/12,087.78
6. Step 6: Final answer
   x = 9,359.90