Finding the Fourth Proportional to 17,114.18, 25,672.18 and 5,428.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,114.18 : 25,672.18 = 5,428.31 : x
2. Step 2: Convert to fraction form
   17,114.18/25,672.18 = 5,428.31/x
3. Step 3: Cross multiply
   17,114.18x = 25,672.18 × 5,428.31
4. Step 4: Simplify right side
   17,114.18x = 139,356,551.42
5. Step 5: Solve for x
   x = 139,356,551.42/17,114.18
6. Step 6: Final answer
   x = 8,142.75