Finding the Fourth Proportional to 9,601.20, 13,153.72 and 9,241.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,601.20 : 13,153.72 = 9,241.68 : x
2. Step 2: Convert to fraction form
   9,601.20/13,153.72 = 9,241.68/x
3. Step 3: Cross multiply
   9,601.20x = 13,153.72 × 9,241.68
4. Step 4: Simplify right side
   9,601.20x = 121,562,471.05
5. Step 5: Solve for x
   x = 121,562,471.05/9,601.20
6. Step 6: Final answer
   x = 12,661.17