Finding the Fourth Proportional to 3,942.29, 5,442.59 and 2,617.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.29 : 5,442.59 = 2,617.81 : x
2. Step 2: Convert to fraction form
   3,942.29/5,442.59 = 2,617.81/x
3. Step 3: Cross multiply
   3,942.29x = 5,442.59 × 2,617.81
4. Step 4: Simplify right side
   3,942.29x = 14,247,666.53
5. Step 5: Solve for x
   x = 14,247,666.53/3,942.29
6. Step 6: Final answer
   x = 3,614.06