Finding the Fourth Proportional to 23,003.78, 34,485.16 and 8,209.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,003.78 : 34,485.16 = 8,209.42 : x
2. Step 2: Convert to fraction form
   23,003.78/34,485.16 = 8,209.42/x
3. Step 3: Cross multiply
   23,003.78x = 34,485.16 × 8,209.42
4. Step 4: Simplify right side
   23,003.78x = 283,103,070.86
5. Step 5: Solve for x
   x = 283,103,070.86/23,003.78
6. Step 6: Final answer
   x = 12,306.81