Finding the Fourth Proportional to 16,821.35, 25,235.94 and 5,728.14

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.35 : 25,235.94 = 5,728.14 : x
2. Step 2: Convert to fraction form
   16,821.35/25,235.94 = 5,728.14/x
3. Step 3: Cross multiply
   16,821.35x = 25,235.94 × 5,728.14
4. Step 4: Simplify right side
   16,821.35x = 144,554,923.52
5. Step 5: Solve for x
   x = 144,554,923.52/16,821.35
6. Step 6: Final answer
   x = 8,593.54