Finding the Fourth Proportional to 17,142.90, 25,716.24 and 5,453.39

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142.90 : 25,716.24 = 5,453.39 : x
2. Step 2: Convert to fraction form
   17,142.90/25,716.24 = 5,453.39/x
3. Step 3: Cross multiply
   17,142.90x = 25,716.24 × 5,453.39
4. Step 4: Simplify right side
   17,142.90x = 140,240,557.47
5. Step 5: Solve for x
   x = 140,240,557.47/17,142.90
6. Step 6: Final answer
   x = 8,180.68