Finding the Fourth Proportional to 6,105.72, 8,425.86 and 3,311.22

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.72 : 8,425.86 = 3,311.22 : x
2. Step 2: Convert to fraction form
   6,105.72/8,425.86 = 3,311.22/x
3. Step 3: Cross multiply
   6,105.72x = 8,425.86 × 3,311.22
4. Step 4: Simplify right side
   6,105.72x = 27,899,876.15
5. Step 5: Solve for x
   x = 27,899,876.15/6,105.72
6. Step 6: Final answer
   x = 4,569.47