Finding the Fourth Proportional to 8,158.86, 12,229.89 and 3,226.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158.86 : 12,229.89 = 3,226.50 : x
2. Step 2: Convert to fraction form
   8,158.86/12,229.89 = 3,226.50/x
3. Step 3: Cross multiply
   8,158.86x = 12,229.89 × 3,226.50
4. Step 4: Simplify right side
   8,158.86x = 39,459,740.09
5. Step 5: Solve for x
   x = 39,459,740.09/8,158.86
6. Step 6: Final answer
   x = 4,836.43