Finding the Fourth Proportional to 16,890.62, 23,308.72 and 9,337.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.62 : 23,308.72 = 9,337.27 : x
2. Step 2: Convert to fraction form
   16,890.62/23,308.72 = 9,337.27/x
3. Step 3: Cross multiply
   16,890.62x = 23,308.72 × 9,337.27
4. Step 4: Simplify right side
   16,890.62x = 217,639,846.92
5. Step 5: Solve for x
   x = 217,639,846.92/16,890.62
6. Step 6: Final answer
   x = 12,885.25