Finding the Fourth Proportional to 17,139.15, 25,710.62 and 5,449.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139.15 : 25,710.62 = 5,449.64 : x
2. Step 2: Convert to fraction form
   17,139.15/25,710.62 = 5,449.64/x
3. Step 3: Cross multiply
   17,139.15x = 25,710.62 × 5,449.64
4. Step 4: Simplify right side
   17,139.15x = 140,113,467.38
5. Step 5: Solve for x
   x = 140,113,467.38/17,139.15
6. Step 6: Final answer
   x = 8,175.05