Finding the Fourth Proportional to 9,142.32, 12,616.43 and 4,950.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.32 : 12,616.43 = 4,950.57 : x
2. Step 2: Convert to fraction form
   9,142.32/12,616.43 = 4,950.57/x
3. Step 3: Cross multiply
   9,142.32x = 12,616.43 × 4,950.57
4. Step 4: Simplify right side
   9,142.32x = 62,458,519.87
5. Step 5: Solve for x
   x = 62,458,519.87/9,142.32
6. Step 6: Final answer
   x = 6,831.80