Finding the Fourth Proportional to 22,678.16, 31,297.83 and 12,608.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,678.16 : 31,297.83 = 12,608.57 : x
2. Step 2: Convert to fraction form
   22,678.16/31,297.83 = 12,608.57/x
3. Step 3: Cross multiply
   22,678.16x = 31,297.83 × 12,608.57
4. Step 4: Simplify right side
   22,678.16x = 394,620,880.40
5. Step 5: Solve for x
   x = 394,620,880.40/22,678.16
6. Step 6: Final answer
   x = 17,400.92