Finding the Fourth Proportional to 9,365.31, 12,941.24 and 8,909.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,365.31 : 12,941.24 = 8,909.73 : x
2. Step 2: Convert to fraction form
   9,365.31/12,941.24 = 8,909.73/x
3. Step 3: Cross multiply
   9,365.31x = 12,941.24 × 8,909.73
4. Step 4: Simplify right side
   9,365.31x = 115,302,909.72
5. Step 5: Solve for x
   x = 115,302,909.72/9,365.31
6. Step 6: Final answer
   x = 12,311.70