Finding the Fourth Proportional to 16,631.50, 22,951.50 and 9,179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,631.50 : 22,951.50 = 9,179.50 : x
2. Step 2: Convert to fraction form
   16,631.50/22,951.50 = 9,179.50/x
3. Step 3: Cross multiply
   16,631.50x = 22,951.50 × 9,179.50
4. Step 4: Simplify right side
   16,631.50x = 210,683,294.25
5. Step 5: Solve for x
   x = 210,683,294.25/16,631.50
6. Step 6: Final answer
   x = 12,667.73