Finding the Fourth Proportional to 12,123.50, 18,183.20 and 3,359.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.50 : 18,183.20 = 3,359.30 : x
2. Step 2: Convert to fraction form
   12,123.50/18,183.20 = 3,359.30/x
3. Step 3: Cross multiply
   12,123.50x = 18,183.20 × 3,359.30
4. Step 4: Simplify right side
   12,123.50x = 61,082,823.76
5. Step 5: Solve for x
   x = 61,082,823.76/12,123.50
6. Step 6: Final answer
   x = 5,038.38