Finding the Fourth Proportional to 22,680.50, 31,304.04 and 12,612.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,680.50 : 31,304.04 = 12,612.38 : x
2. Step 2: Convert to fraction form
   22,680.50/31,304.04 = 12,612.38/x
3. Step 3: Cross multiply
   22,680.50x = 31,304.04 × 12,612.38
4. Step 4: Simplify right side
   22,680.50x = 394,818,448.02
5. Step 5: Solve for x
   x = 394,818,448.02/22,680.50
6. Step 6: Final answer
   x = 17,407.84