Finding the Fourth Proportional to 16,815.96, 23,204.00 and 9,645.51

Step by Step Solution

1. Step 1: Write the proportion equation
   16,815.96 : 23,204.00 = 9,645.51 : x
2. Step 2: Convert to fraction form
   16,815.96/23,204.00 = 9,645.51/x
3. Step 3: Cross multiply
   16,815.96x = 23,204.00 × 9,645.51
4. Step 4: Simplify right side
   16,815.96x = 223,814,249.79
5. Step 5: Solve for x
   x = 223,814,249.79/16,815.96
6. Step 6: Final answer
   x = 13,309.63