Finding the Fourth Proportional to 8,327.89, 12,492.24 and 2,781.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,327.89 : 12,492.24 = 2,781.28 : x
2. Step 2: Convert to fraction form
   8,327.89/12,492.24 = 2,781.28/x
3. Step 3: Cross multiply
   8,327.89x = 12,492.24 × 2,781.28
4. Step 4: Simplify right side
   8,327.89x = 34,744,417.27
5. Step 5: Solve for x
   x = 34,744,417.27/8,327.89
6. Step 6: Final answer
   x = 4,172.06