Finding the Fourth Proportional to 17,172.18, 25,757.78 and 5,486.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,172.18 : 25,757.78 = 5,486.10 : x
2. Step 2: Convert to fraction form
   17,172.18/25,757.78 = 5,486.10/x
3. Step 3: Cross multiply
   17,172.18x = 25,757.78 × 5,486.10
4. Step 4: Simplify right side
   17,172.18x = 141,309,756.86
5. Step 5: Solve for x
   x = 141,309,756.86/17,172.18
6. Step 6: Final answer
   x = 8,228.99