Finding the Fourth Proportional to 3,986.31, 5,498.31 and 3,454.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.31 : 5,498.31 = 3,454.25 : x
2. Step 2: Convert to fraction form
   3,986.31/5,498.31 = 3,454.25/x
3. Step 3: Cross multiply
   3,986.31x = 5,498.31 × 3,454.25
4. Step 4: Simplify right side
   3,986.31x = 18,992,509.10
5. Step 5: Solve for x
   x = 18,992,509.10/3,986.31
6. Step 6: Final answer
   x = 4,764.44