Finding the Fourth Proportional to 10,436.75, 14,403.05 and 5,721.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.75 : 14,403.05 = 5,721.47 : x
2. Step 2: Convert to fraction form
   10,436.75/14,403.05 = 5,721.47/x
3. Step 3: Cross multiply
   10,436.75x = 14,403.05 × 5,721.47
4. Step 4: Simplify right side
   10,436.75x = 82,406,618.48
5. Step 5: Solve for x
   x = 82,406,618.48/10,436.75
6. Step 6: Final answer
   x = 7,895.81