Finding the Fourth Proportional to 3,900.12, 5,841.39 and 2,735.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.12 : 5,841.39 = 2,735.31 : x
2. Step 2: Convert to fraction form
   3,900.12/5,841.39 = 2,735.31/x
3. Step 3: Cross multiply
   3,900.12x = 5,841.39 × 2,735.31
4. Step 4: Simplify right side
   3,900.12x = 15,978,012.48
5. Step 5: Solve for x
   x = 15,978,012.48/3,900.12
6. Step 6: Final answer
   x = 4,096.80