Finding the Fourth Proportional to 9,322.48, 12,807.47 and 8,340.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,322.48 : 12,807.47 = 8,340.76 : x
2. Step 2: Convert to fraction form
   9,322.48/12,807.47 = 8,340.76/x
3. Step 3: Cross multiply
   9,322.48x = 12,807.47 × 8,340.76
4. Step 4: Simplify right side
   9,322.48x = 106,824,033.48
5. Step 5: Solve for x
   x = 106,824,033.48/9,322.48
6. Step 6: Final answer
   x = 11,458.76