Finding the Fourth Proportional to 12,401.13, 17,119.31 and 8,158.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.13 : 17,119.31 = 8,158.35 : x
2. Step 2: Convert to fraction form
   12,401.13/17,119.31 = 8,158.35/x
3. Step 3: Cross multiply
   12,401.13x = 17,119.31 × 8,158.35
4. Step 4: Simplify right side
   12,401.13x = 139,665,281.95
5. Step 5: Solve for x
   x = 139,665,281.95/12,401.13
6. Step 6: Final answer
   x = 11,262.30