Finding the Fourth Proportional to 22,963.98, 31,690.76 and 12,893.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,963.98 : 31,690.76 = 12,893.16 : x
2. Step 2: Convert to fraction form
   22,963.98/31,690.76 = 12,893.16/x
3. Step 3: Cross multiply
   22,963.98x = 31,690.76 × 12,893.16
4. Step 4: Simplify right side
   22,963.98x = 408,594,039.20
5. Step 5: Solve for x
   x = 408,594,039.20/22,963.98
6. Step 6: Final answer
   x = 17,792.82