Finding the Fourth Proportional to 9,408.06, 13,042.56 and 8,908.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,408.06 : 13,042.56 = 8,908.71 : x
2. Step 2: Convert to fraction form
   9,408.06/13,042.56 = 8,908.71/x
3. Step 3: Cross multiply
   9,408.06x = 13,042.56 × 8,908.71
4. Step 4: Simplify right side
   9,408.06x = 116,192,384.70
5. Step 5: Solve for x
   x = 116,192,384.70/9,408.06
6. Step 6: Final answer
   x = 12,350.30