Finding the Fourth Proportional to 16,638.74, 22,960.80 and 9,085.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.74 : 22,960.80 = 9,085.38 : x
2. Step 2: Convert to fraction form
   16,638.74/22,960.80 = 9,085.38/x
3. Step 3: Cross multiply
   16,638.74x = 22,960.80 × 9,085.38
4. Step 4: Simplify right side
   16,638.74x = 208,607,593.10
5. Step 5: Solve for x
   x = 208,607,593.10/16,638.74
6. Step 6: Final answer
   x = 12,537.46