Finding the Fourth Proportional to 11,019.55, 16,508.49 and 8,542.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.55 : 16,508.49 = 8,542.24 : x
2. Step 2: Convert to fraction form
   11,019.55/16,508.49 = 8,542.24/x
3. Step 3: Cross multiply
   11,019.55x = 16,508.49 × 8,542.24
4. Step 4: Simplify right side
   11,019.55x = 141,019,483.62
5. Step 5: Solve for x
   x = 141,019,483.62/11,019.55
6. Step 6: Final answer
   x = 12,797.21