Finding the Fourth Proportional to 16,819.72, 23,211.30 and 9,367.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,819.72 : 23,211.30 = 9,367.72 : x
2. Step 2: Convert to fraction form
   16,819.72/23,211.30 = 9,367.72/x
3. Step 3: Cross multiply
   16,819.72x = 23,211.30 × 9,367.72
4. Step 4: Simplify right side
   16,819.72x = 217,436,959.24
5. Step 5: Solve for x
   x = 217,436,959.24/16,819.72
6. Step 6: Final answer
   x = 12,927.50