Finding the Fourth Proportional to 16,819.50, 23,211.63 and 9,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,819.50 : 23,211.63 = 9,367.50 : x
2. Step 2: Convert to fraction form
   16,819.50/23,211.63 = 9,367.50/x
3. Step 3: Cross multiply
   16,819.50x = 23,211.63 × 9,367.50
4. Step 4: Simplify right side
   16,819.50x = 217,434,944.03
5. Step 5: Solve for x
   x = 217,434,944.03/16,819.50
6. Step 6: Final answer
   x = 12,927.55