Finding the Fourth Proportional to 11,401.31, 17,107.88 and 8,627.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,401.31 : 17,107.88 = 8,627.16 : x
2. Step 2: Convert to fraction form
   11,401.31/17,107.88 = 8,627.16/x
3. Step 3: Cross multiply
   11,401.31x = 17,107.88 × 8,627.16
4. Step 4: Simplify right side
   11,401.31x = 147,592,418.02
5. Step 5: Solve for x
   x = 147,592,418.02/11,401.31
6. Step 6: Final answer
   x = 12,945.22