Finding the Fourth Proportional to 8,851.86, 12,215.52 and 4,872.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.86 : 12,215.52 = 4,872.87 : x
2. Step 2: Convert to fraction form
   8,851.86/12,215.52 = 4,872.87/x
3. Step 3: Cross multiply
   8,851.86x = 12,215.52 × 4,872.87
4. Step 4: Simplify right side
   8,851.86x = 59,524,640.94
5. Step 5: Solve for x
   x = 59,524,640.94/8,851.86
6. Step 6: Final answer
   x = 6,724.53