Finding the Fourth Proportional to 10,786.39, 16,179.57 and 3,391.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,786.39 : 16,179.57 = 3,391.49 : x
2. Step 2: Convert to fraction form
   10,786.39/16,179.57 = 3,391.49/x
3. Step 3: Cross multiply
   10,786.39x = 16,179.57 × 3,391.49
4. Step 4: Simplify right side
   10,786.39x = 54,872,849.86
5. Step 5: Solve for x
   x = 54,872,849.86/10,786.39
6. Step 6: Final answer
   x = 5,087.23