Finding the Fourth Proportional to 9,834.72, 13,557.60 and 7,945.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,834.72 : 13,557.60 = 7,945.92 : x
2. Step 2: Convert to fraction form
   9,834.72/13,557.60 = 7,945.92/x
3. Step 3: Cross multiply
   9,834.72x = 13,557.60 × 7,945.92
4. Step 4: Simplify right side
   9,834.72x = 107,727,604.99
5. Step 5: Solve for x
   x = 107,727,604.99/9,834.72
6. Step 6: Final answer
   x = 10,953.80