Finding the Fourth Proportional to 16,640.94, 22,964.58 and 9,087.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640.94 : 22,964.58 = 9,087.42 : x
2. Step 2: Convert to fraction form
   16,640.94/22,964.58 = 9,087.42/x
3. Step 3: Cross multiply
   16,640.94x = 22,964.58 × 9,087.42
4. Step 4: Simplify right side
   16,640.94x = 208,688,783.58
5. Step 5: Solve for x
   x = 208,688,783.58/16,640.94
6. Step 6: Final answer
   x = 12,540.68