Finding the Fourth Proportional to 11,316.52, 15,612.54 and 8,339.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,316.52 : 15,612.54 = 8,339.47 : x
2. Step 2: Convert to fraction form
   11,316.52/15,612.54 = 8,339.47/x
3. Step 3: Cross multiply
   11,316.52x = 15,612.54 × 8,339.47
4. Step 4: Simplify right side
   11,316.52x = 130,200,308.95
5. Step 5: Solve for x
   x = 130,200,308.95/11,316.52
6. Step 6: Final answer
   x = 11,505.33