Finding the Fourth Proportional to 16,781.42, 23,157.88 and 9,227.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,781.42 : 23,157.88 = 9,227.78 : x
2. Step 2: Convert to fraction form
   16,781.42/23,157.88 = 9,227.78/x
3. Step 3: Cross multiply
   16,781.42x = 23,157.88 × 9,227.78
4. Step 4: Simplify right side
   16,781.42x = 213,695,821.91
5. Step 5: Solve for x
   x = 213,695,821.91/16,781.42
6. Step 6: Final answer
   x = 12,734.07