Finding the Fourth Proportional to 16,205.16, 22,362.78 and 9,131.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,205.16 : 22,362.78 = 9,131.58 : x
2. Step 2: Convert to fraction form
   16,205.16/22,362.78 = 9,131.58/x
3. Step 3: Cross multiply
   16,205.16x = 22,362.78 × 9,131.58
4. Step 4: Simplify right side
   16,205.16x = 204,207,514.59
5. Step 5: Solve for x
   x = 204,207,514.59/16,205.16
6. Step 6: Final answer
   x = 12,601.39