Finding the Fourth Proportional to 11,401.08, 15,748.68 and 9,171.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,401.08 : 15,748.68 = 9,171.37 : x
2. Step 2: Convert to fraction form
   11,401.08/15,748.68 = 9,171.37/x
3. Step 3: Cross multiply
   11,401.08x = 15,748.68 × 9,171.37
4. Step 4: Simplify right side
   11,401.08x = 144,436,971.29
5. Step 5: Solve for x
   x = 144,436,971.29/11,401.08
6. Step 6: Final answer
   x = 12,668.72