Finding the Fourth Proportional to 13,824.50, 20,736.68 and 3,963.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,824.50 : 20,736.68 = 3,963.83 : x
2. Step 2: Convert to fraction form
   13,824.50/20,736.68 = 3,963.83/x
3. Step 3: Cross multiply
   13,824.50x = 20,736.68 × 3,963.83
4. Step 4: Simplify right side
   13,824.50x = 82,196,550.78
5. Step 5: Solve for x
   x = 82,196,550.78/13,824.50
6. Step 6: Final answer
   x = 5,945.72