Finding the Fourth Proportional to 8,550.90, 12,826.20 and 7,086.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,550.90 : 12,826.20 = 7,086.96 : x
2. Step 2: Convert to fraction form
   8,550.90/12,826.20 = 7,086.96/x
3. Step 3: Cross multiply
   8,550.90x = 12,826.20 × 7,086.96
4. Step 4: Simplify right side
   8,550.90x = 90,898,766.35
5. Step 5: Solve for x
   x = 90,898,766.35/8,550.90
6. Step 6: Final answer
   x = 10,630.32