Finding the Fourth Proportional to 8,171.72, 12,257.96 and 2,328.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,171.72 : 12,257.96 = 2,328.72 : x
2. Step 2: Convert to fraction form
   8,171.72/12,257.96 = 2,328.72/x
3. Step 3: Cross multiply
   8,171.72x = 12,257.96 × 2,328.72
4. Step 4: Simplify right side
   8,171.72x = 28,545,356.61
5. Step 5: Solve for x
   x = 28,545,356.61/8,171.72
6. Step 6: Final answer
   x = 3,493.19