Finding the Fourth Proportional to 9,238.47, 12,741.89 and 8,177.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,238.47 : 12,741.89 = 8,177.37 : x
2. Step 2: Convert to fraction form
   9,238.47/12,741.89 = 8,177.37/x
3. Step 3: Cross multiply
   9,238.47x = 12,741.89 × 8,177.37
4. Step 4: Simplify right side
   9,238.47x = 104,195,108.14
5. Step 5: Solve for x
   x = 104,195,108.14/9,238.47
6. Step 6: Final answer
   x = 11,278.39