Finding the Fourth Proportional to 12,401.31, 17,101.76 and 9,417.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.31 : 17,101.76 = 9,417.27 : x
2. Step 2: Convert to fraction form
   12,401.31/17,101.76 = 9,417.27/x
3. Step 3: Cross multiply
   12,401.31x = 17,101.76 × 9,417.27
4. Step 4: Simplify right side
   12,401.31x = 161,051,844.31
5. Step 5: Solve for x
   x = 161,051,844.31/12,401.31
6. Step 6: Final answer
   x = 12,986.68