Finding the Fourth Proportional to 16,640.84, 22,964.31 and 9,087.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640.84 : 22,964.31 = 9,087.12 : x
2. Step 2: Convert to fraction form
   16,640.84/22,964.31 = 9,087.12/x
3. Step 3: Cross multiply
   16,640.84x = 22,964.31 × 9,087.12
4. Step 4: Simplify right side
   16,640.84x = 208,679,440.69
5. Step 5: Solve for x
   x = 208,679,440.69/16,640.84
6. Step 6: Final answer
   x = 12,540.20