Finding the Fourth Proportional to 16,408.56, 22,645.71 and 9,336.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,408.56 : 22,645.71 = 9,336.09 : x
2. Step 2: Convert to fraction form
   16,408.56/22,645.71 = 9,336.09/x
3. Step 3: Cross multiply
   16,408.56x = 22,645.71 × 9,336.09
4. Step 4: Simplify right side
   16,408.56x = 211,422,386.67
5. Step 5: Solve for x
   x = 211,422,386.67/16,408.56
6. Step 6: Final answer
   x = 12,884.88