Finding the Fourth Proportional to 9,081.30, 12,524.28 and 8,206.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.30 : 12,524.28 = 8,206.50 : x
2. Step 2: Convert to fraction form
   9,081.30/12,524.28 = 8,206.50/x
3. Step 3: Cross multiply
   9,081.30x = 12,524.28 × 8,206.50
4. Step 4: Simplify right side
   9,081.30x = 102,780,503.82
5. Step 5: Solve for x
   x = 102,780,503.82/9,081.30
6. Step 6: Final answer
   x = 11,317.82