Finding the Fourth Proportional to 17,442.15, 25,978.53 and 17,357.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,442.15 : 25,978.53 = 17,357.18 : x
2. Step 2: Convert to fraction form
   17,442.15/25,978.53 = 17,357.18/x
3. Step 3: Cross multiply
   17,442.15x = 25,978.53 × 17,357.18
4. Step 4: Simplify right side
   17,442.15x = 450,913,891.45
5. Step 5: Solve for x
   x = 450,913,891.45/17,442.15
6. Step 6: Final answer
   x = 25,851.97