Finding the Fourth Proportional to 11,419.52, 15,754.50 and 7,168.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,419.52 : 15,754.50 = 7,168.77 : x
2. Step 2: Convert to fraction form
   11,419.52/15,754.50 = 7,168.77/x
3. Step 3: Cross multiply
   11,419.52x = 15,754.50 × 7,168.77
4. Step 4: Simplify right side
   11,419.52x = 112,940,386.97
5. Step 5: Solve for x
   x = 112,940,386.97/11,419.52
6. Step 6: Final answer
   x = 9,890.12