Finding the Fourth Proportional to 8,615.73, 12,915.69 and 3,354.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,615.73 : 12,915.69 = 3,354.27 : x
2. Step 2: Convert to fraction form
   8,615.73/12,915.69 = 3,354.27/x
3. Step 3: Cross multiply
   8,615.73x = 12,915.69 × 3,354.27
4. Step 4: Simplify right side
   8,615.73x = 43,322,711.50
5. Step 5: Solve for x
   x = 43,322,711.50/8,615.73
6. Step 6: Final answer
   x = 5,028.33