Finding the Fourth Proportional to 6,105.50, 8,425.60 and 3,311

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.50 : 8,425.60 = 3,311 : x
2. Step 2: Convert to fraction form
   6,105.50/8,425.60 = 3,311/x
3. Step 3: Cross multiply
   6,105.50x = 8,425.60 × 3,311
4. Step 4: Simplify right side
   6,105.50x = 27,897,145.05
5. Step 5: Solve for x
   x = 27,897,145.05/6,105.50
6. Step 6: Final answer
   x = 4,569.18