Finding the Fourth Proportional to 10,126.09, 13,872.82 and 9,747.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,126.09 : 13,872.82 = 9,747.38 : x
2. Step 2: Convert to fraction form
   10,126.09/13,872.82 = 9,747.38/x
3. Step 3: Cross multiply
   10,126.09x = 13,872.82 × 9,747.38
4. Step 4: Simplify right side
   10,126.09x = 135,223,695.08
5. Step 5: Solve for x
   x = 135,223,695.08/10,126.09
6. Step 6: Final answer
   x = 13,353.99