Finding the Fourth Proportional to 8,324.96, 12,478.76 and 3,392.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,324.96 : 12,478.76 = 3,392.56 : x
2. Step 2: Convert to fraction form
   8,324.96/12,478.76 = 3,392.56/x
3. Step 3: Cross multiply
   8,324.96x = 12,478.76 × 3,392.56
4. Step 4: Simplify right side
   8,324.96x = 42,334,942.03
5. Step 5: Solve for x
   x = 42,334,942.03/8,324.96
6. Step 6: Final answer
   x = 5,085.30