Finding the Fourth Proportional to 8,425.47, 11,626.37 and 8,142.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,425.47 : 11,626.37 = 8,142.38 : x
2. Step 2: Convert to fraction form
   8,425.47/11,626.37 = 8,142.38/x
3. Step 3: Cross multiply
   8,425.47x = 11,626.37 × 8,142.38
4. Step 4: Simplify right side
   8,425.47x = 94,666,223.72
5. Step 5: Solve for x
   x = 94,666,223.72/8,425.47
6. Step 6: Final answer
   x = 11,235.72