Finding the Fourth Proportional to 8,915.12, 12,274.71 and 7,852.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,915.12 : 12,274.71 = 7,852.20 : x
2. Step 2: Convert to fraction form
   8,915.12/12,274.71 = 7,852.20/x
3. Step 3: Cross multiply
   8,915.12x = 12,274.71 × 7,852.20
4. Step 4: Simplify right side
   8,915.12x = 96,383,477.86
5. Step 5: Solve for x
   x = 96,383,477.86/8,915.12
6. Step 6: Final answer
   x = 10,811.24