Finding the Fourth Proportional to 10,198.20, 14,073.53 and 5,721.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,198.20 : 14,073.53 = 5,721.96 : x
2. Step 2: Convert to fraction form
   10,198.20/14,073.53 = 5,721.96/x
3. Step 3: Cross multiply
   10,198.20x = 14,073.53 × 5,721.96
4. Step 4: Simplify right side
   10,198.20x = 80,528,175.72
5. Step 5: Solve for x
   x = 80,528,175.72/10,198.20
6. Step 6: Final answer
   x = 7,896.31