Finding the Fourth Proportional to 11,612.97, 16,034.22 and 7,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,612.97 : 16,034.22 = 7,142.72 : x
2. Step 2: Convert to fraction form
   11,612.97/16,034.22 = 7,142.72/x
3. Step 3: Cross multiply
   11,612.97x = 16,034.22 × 7,142.72
4. Step 4: Simplify right side
   11,612.97x = 114,527,863.71
5. Step 5: Solve for x
   x = 114,527,863.71/11,612.97
6. Step 6: Final answer
   x = 9,862.06