Finding the Fourth Proportional to 8,302.18, 12,456.60 and 3,372.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,302.18 : 12,456.60 = 3,372.20 : x
2. Step 2: Convert to fraction form
   8,302.18/12,456.60 = 3,372.20/x
3. Step 3: Cross multiply
   8,302.18x = 12,456.60 × 3,372.20
4. Step 4: Simplify right side
   8,302.18x = 42,006,146.52
5. Step 5: Solve for x
   x = 42,006,146.52/8,302.18
6. Step 6: Final answer
   x = 5,059.65