Finding the Fourth Proportional to 16,821.50, 23,212.88 and 9,267.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.50 : 23,212.88 = 9,267.46 : x
2. Step 2: Convert to fraction form
   16,821.50/23,212.88 = 9,267.46/x
3. Step 3: Cross multiply
   16,821.50x = 23,212.88 × 9,267.46
4. Step 4: Simplify right side
   16,821.50x = 215,124,332.52
5. Step 5: Solve for x
   x = 215,124,332.52/16,821.50
6. Step 6: Final answer
   x = 12,788.66