Finding the Fourth Proportional to 9,084.69, 12,531.80 and 8,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,084.69 : 12,531.80 = 8,442.50 : x
2. Step 2: Convert to fraction form
   9,084.69/12,531.80 = 8,442.50/x
3. Step 3: Cross multiply
   9,084.69x = 12,531.80 × 8,442.50
4. Step 4: Simplify right side
   9,084.69x = 105,799,632.46
5. Step 5: Solve for x
   x = 105,799,632.46/9,084.69
6. Step 6: Final answer
   x = 11,645.93