Finding the Fourth Proportional to 8,308.32, 12,481.92 and 7,141.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.32 : 12,481.92 = 7,141.92 : x
2. Step 2: Convert to fraction form
   8,308.32/12,481.92 = 7,141.92/x
3. Step 3: Cross multiply
   8,308.32x = 12,481.92 × 7,141.92
4. Step 4: Simplify right side
   8,308.32x = 89,144,874.09
5. Step 5: Solve for x
   x = 89,144,874.09/8,308.32
6. Step 6: Final answer
   x = 10,729.59