Finding the Fourth Proportional to 10,825.52, 14,949.63 and 8,442.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,825.52 : 14,949.63 = 8,442.09 : x
2. Step 2: Convert to fraction form
   10,825.52/14,949.63 = 8,442.09/x
3. Step 3: Cross multiply
   10,825.52x = 14,949.63 × 8,442.09
4. Step 4: Simplify right side
   10,825.52x = 126,206,121.93
5. Step 5: Solve for x
   x = 126,206,121.93/10,825.52
6. Step 6: Final answer
   x = 11,658.21