Finding the Fourth Proportional to 10,436.73, 14,403.24 and 5,721.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.73 : 14,403.24 = 5,721.21 : x
2. Step 2: Convert to fraction form
   10,436.73/14,403.24 = 5,721.21/x
3. Step 3: Cross multiply
   10,436.73x = 14,403.24 × 5,721.21
4. Step 4: Simplify right side
   10,436.73x = 82,403,860.10
5. Step 5: Solve for x
   x = 82,403,860.10/10,436.73
6. Step 6: Final answer
   x = 7,895.57