Finding the Fourth Proportional to 13,439.94, 18,544.41 and 7,849.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,439.94 : 18,544.41 = 7,849.86 : x
2. Step 2: Convert to fraction form
   13,439.94/18,544.41 = 7,849.86/x
3. Step 3: Cross multiply
   13,439.94x = 18,544.41 × 7,849.86
4. Step 4: Simplify right side
   13,439.94x = 145,571,022.28
5. Step 5: Solve for x
   x = 145,571,022.28/13,439.94
6. Step 6: Final answer
   x = 10,831.23