Finding the Fourth Proportional to 5,414.49, 7,456.32 and 3,920.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,414.49 : 7,456.32 = 3,920.04 : x
2. Step 2: Convert to fraction form
   5,414.49/7,456.32 = 3,920.04/x
3. Step 3: Cross multiply
   5,414.49x = 7,456.32 × 3,920.04
4. Step 4: Simplify right side
   5,414.49x = 29,229,072.65
5. Step 5: Solve for x
   x = 29,229,072.65/5,414.49
6. Step 6: Final answer
   x = 5,398.31