Finding the Fourth Proportional to 10,278.72, 15,452.24 and 8,443.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,278.72 : 15,452.24 = 8,443.44 : x
2. Step 2: Convert to fraction form
   10,278.72/15,452.24 = 8,443.44/x
3. Step 3: Cross multiply
   10,278.72x = 15,452.24 × 8,443.44
4. Step 4: Simplify right side
   10,278.72x = 130,470,061.31
5. Step 5: Solve for x
   x = 130,470,061.31/10,278.72
6. Step 6: Final answer
   x = 12,693.22