Finding the Fourth Proportional to 25,906.72, 38,835.42 and 16,520.38

Step by Step Solution

1. Step 1: Write the proportion equation
   25,906.72 : 38,835.42 = 16,520.38 : x
2. Step 2: Convert to fraction form
   25,906.72/38,835.42 = 16,520.38/x
3. Step 3: Cross multiply
   25,906.72x = 38,835.42 × 16,520.38
4. Step 4: Simplify right side
   25,906.72x = 641,575,895.86
5. Step 5: Solve for x
   x = 641,575,895.86/25,906.72
6. Step 6: Final answer
   x = 24,764.84