Finding the Fourth Proportional to 9,142.56, 12,616.68 and 4,950.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.56 : 12,616.68 = 4,950.72 : x
2. Step 2: Convert to fraction form
   9,142.56/12,616.68 = 4,950.72/x
3. Step 3: Cross multiply
   9,142.56x = 12,616.68 × 4,950.72
4. Step 4: Simplify right side
   9,142.56x = 62,461,650.01
5. Step 5: Solve for x
   x = 62,461,650.01/9,142.56
6. Step 6: Final answer
   x = 6,831.97