Finding the Fourth Proportional to 9,269.92, 12,782.64 and 7,930.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269.92 : 12,782.64 = 7,930.72 : x
2. Step 2: Convert to fraction form
   9,269.92/12,782.64 = 7,930.72/x
3. Step 3: Cross multiply
   9,269.92x = 12,782.64 × 7,930.72
4. Step 4: Simplify right side
   9,269.92x = 101,375,538.70
5. Step 5: Solve for x
   x = 101,375,538.70/9,269.92
6. Step 6: Final answer
   x = 10,935.97