Finding the Fourth Proportional to 12,084.28, 18,123.54 and 3,318.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,084.28 : 18,123.54 = 3,318.52 : x
2. Step 2: Convert to fraction form
   12,084.28/18,123.54 = 3,318.52/x
3. Step 3: Cross multiply
   12,084.28x = 18,123.54 × 3,318.52
4. Step 4: Simplify right side
   12,084.28x = 60,143,329.96
5. Step 5: Solve for x
   x = 60,143,329.96/12,084.28
6. Step 6: Final answer
   x = 4,976.99