Finding the Fourth Proportional to 8,142.72, 12,258.24 and 7,296

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.72 : 12,258.24 = 7,296 : x
2. Step 2: Convert to fraction form
   8,142.72/12,258.24 = 7,296/x
3. Step 3: Cross multiply
   8,142.72x = 12,258.24 × 7,296
4. Step 4: Simplify right side
   8,142.72x = 89,436,119.04
5. Step 5: Solve for x
   x = 89,436,119.04/8,142.72
6. Step 6: Final answer
   x = 10,983.57