Finding the Fourth Proportional to 12,604.28, 18,906.48 and 3,839.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,604.28 : 18,906.48 = 3,839.18 : x
2. Step 2: Convert to fraction form
   12,604.28/18,906.48 = 3,839.18/x
3. Step 3: Cross multiply
   12,604.28x = 18,906.48 × 3,839.18
4. Step 4: Simplify right side
   12,604.28x = 72,585,379.89
5. Step 5: Solve for x
   x = 72,585,379.89/12,604.28
6. Step 6: Final answer
   x = 5,758.79