Finding the Fourth Proportional to 8,272.86, 12,396.30 and 7,229.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.86 : 12,396.30 = 7,229.58 : x
2. Step 2: Convert to fraction form
   8,272.86/12,396.30 = 7,229.58/x
3. Step 3: Cross multiply
   8,272.86x = 12,396.30 × 7,229.58
4. Step 4: Simplify right side
   8,272.86x = 89,620,042.55
5. Step 5: Solve for x
   x = 89,620,042.55/8,272.86
6. Step 6: Final answer
   x = 10,833.02