Finding the Fourth Proportional to 11,155.20, 15,395.04 and 8,498.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,155.20 : 15,395.04 = 8,498.04 : x
2. Step 2: Convert to fraction form
   11,155.20/15,395.04 = 8,498.04/x
3. Step 3: Cross multiply
   11,155.20x = 15,395.04 × 8,498.04
4. Step 4: Simplify right side
   11,155.20x = 130,827,665.72
5. Step 5: Solve for x
   x = 130,827,665.72/11,155.20
6. Step 6: Final answer
   x = 11,727.95