Finding the Fourth Proportional to 16,874.89, 23,287.24 and 9,321.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,874.89 : 23,287.24 = 9,321.71 : x
2. Step 2: Convert to fraction form
   16,874.89/23,287.24 = 9,321.71/x
3. Step 3: Cross multiply
   16,874.89x = 23,287.24 × 9,321.71
4. Step 4: Simplify right side
   16,874.89x = 217,076,897.98
5. Step 5: Solve for x
   x = 217,076,897.98/16,874.89
6. Step 6: Final answer
   x = 12,863.90