Finding the Fourth Proportional to 8,172.29, 12,258.38 and 2,328.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,172.29 : 12,258.38 = 2,328.89 : x
2. Step 2: Convert to fraction form
   8,172.29/12,258.38 = 2,328.89/x
3. Step 3: Cross multiply
   8,172.29x = 12,258.38 × 2,328.89
4. Step 4: Simplify right side
   8,172.29x = 28,548,406.95
5. Step 5: Solve for x
   x = 28,548,406.95/8,172.29
6. Step 6: Final answer
   x = 3,493.32