Finding the Fourth Proportional to 16,821.72, 23,212.86 and 9,746.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.72 : 23,212.86 = 9,746.88 : x
2. Step 2: Convert to fraction form
   16,821.72/23,212.86 = 9,746.88/x
3. Step 3: Cross multiply
   16,821.72x = 23,212.86 × 9,746.88
4. Step 4: Simplify right side
   16,821.72x = 226,252,960.88
5. Step 5: Solve for x
   x = 226,252,960.88/16,821.72
6. Step 6: Final answer
   x = 13,450.05