Finding the Fourth Proportional to 8,392.95, 12,588.69 and 3,949.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,392.95 : 12,588.69 = 3,949.56 : x
2. Step 2: Convert to fraction form
   8,392.95/12,588.69 = 3,949.56/x
3. Step 3: Cross multiply
   8,392.95x = 12,588.69 × 3,949.56
4. Step 4: Simplify right side
   8,392.95x = 49,719,786.48
5. Step 5: Solve for x
   x = 49,719,786.48/8,392.95
6. Step 6: Final answer
   x = 5,923.99