Finding the Fourth Proportional to 9,320.04, 12,855.24 and 8,921.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320.04 : 12,855.24 = 8,921.52 : x
2. Step 2: Convert to fraction form
   9,320.04/12,855.24 = 8,921.52/x
3. Step 3: Cross multiply
   9,320.04x = 12,855.24 × 8,921.52
4. Step 4: Simplify right side
   9,320.04x = 114,688,280.76
5. Step 5: Solve for x
   x = 114,688,280.76/9,320.04
6. Step 6: Final answer
   x = 12,305.56