Finding the Fourth Proportional to 8,158.72, 12,222.72 and 4,057.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158.72 : 12,222.72 = 4,057.60 : x
2. Step 2: Convert to fraction form
   8,158.72/12,222.72 = 4,057.60/x
3. Step 3: Cross multiply
   8,158.72x = 12,222.72 × 4,057.60
4. Step 4: Simplify right side
   8,158.72x = 49,594,908.67
5. Step 5: Solve for x
   x = 49,594,908.67/8,158.72
6. Step 6: Final answer
   x = 6,078.76