Finding the Fourth Proportional to 25,920.86, 35,759.52 and 15,849.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,920.86 : 35,759.52 = 15,849.72 : x
2. Step 2: Convert to fraction form
   25,920.86/35,759.52 = 15,849.72/x
3. Step 3: Cross multiply
   25,920.86x = 35,759.52 × 15,849.72
4. Step 4: Simplify right side
   25,920.86x = 566,778,379.33
5. Step 5: Solve for x
   x = 566,778,379.33/25,920.86
6. Step 6: Final answer
   x = 21,865.72