Finding the Fourth Proportional to 11,613.52, 16,034.76 and 8,920.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,613.52 : 16,034.76 = 8,920.24 : x
2. Step 2: Convert to fraction form
   11,613.52/16,034.76 = 8,920.24/x
3. Step 3: Cross multiply
   11,613.52x = 16,034.76 × 8,920.24
4. Step 4: Simplify right side
   11,613.52x = 143,033,907.54
5. Step 5: Solve for x
   x = 143,033,907.54/11,613.52
6. Step 6: Final answer
   x = 12,316.15