Finding the Fourth Proportional to 16,737.86, 25,105.57 and 7,855.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,737.86 : 25,105.57 = 7,855.21 : x
2. Step 2: Convert to fraction form
   16,737.86/25,105.57 = 7,855.21/x
3. Step 3: Cross multiply
   16,737.86x = 25,105.57 × 7,855.21
4. Step 4: Simplify right side
   16,737.86x = 197,209,524.52
5. Step 5: Solve for x
   x = 197,209,524.52/16,737.86
6. Step 6: Final answer
   x = 11,782.24