Finding the Fourth Proportional to 16,974.15, 23,417.89 and 12,508.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,974.15 : 23,417.89 = 12,508.55 : x
2. Step 2: Convert to fraction form
   16,974.15/23,417.89 = 12,508.55/x
3. Step 3: Cross multiply
   16,974.15x = 23,417.89 × 12,508.55
4. Step 4: Simplify right side
   16,974.15x = 292,923,857.78
5. Step 5: Solve for x
   x = 292,923,857.78/16,974.15
6. Step 6: Final answer
   x = 17,257.06