Finding the Fourth Proportional to 22,792.50, 31,454.73 and 12,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,792.50 : 31,454.73 = 12,856.50 : x
2. Step 2: Convert to fraction form
   22,792.50/31,454.73 = 12,856.50/x
3. Step 3: Cross multiply
   22,792.50x = 31,454.73 × 12,856.50
4. Step 4: Simplify right side
   22,792.50x = 404,397,736.25
5. Step 5: Solve for x
   x = 404,397,736.25/22,792.50
6. Step 6: Final answer
   x = 17,742.58