Finding the Fourth Proportional to 16,974.03, 23,423.78 and 9,420.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,974.03 : 23,423.78 = 9,420.27 : x
2. Step 2: Convert to fraction form
   16,974.03/23,423.78 = 9,420.27/x
3. Step 3: Cross multiply
   16,974.03x = 23,423.78 × 9,420.27
4. Step 4: Simplify right side
   16,974.03x = 220,658,284.92
5. Step 5: Solve for x
   x = 220,658,284.92/16,974.03
6. Step 6: Final answer
   x = 12,999.76