Finding the Fourth Proportional to 8,874.72, 12,243.24 and 5,335.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,874.72 : 12,243.24 = 5,335.90 : x
2. Step 2: Convert to fraction form
   8,874.72/12,243.24 = 5,335.90/x
3. Step 3: Cross multiply
   8,874.72x = 12,243.24 × 5,335.90
4. Step 4: Simplify right side
   8,874.72x = 65,328,704.32
5. Step 5: Solve for x
   x = 65,328,704.32/8,874.72
6. Step 6: Final answer
   x = 7,361.21