Finding the Fourth Proportional to 22,792.77, 31,455.61 and 12,723.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,792.77 : 31,455.61 = 12,723.18 : x
2. Step 2: Convert to fraction form
   22,792.77/31,455.61 = 12,723.18/x
3. Step 3: Cross multiply
   22,792.77x = 31,455.61 × 12,723.18
4. Step 4: Simplify right side
   22,792.77x = 400,215,238.27
5. Step 5: Solve for x
   x = 400,215,238.27/22,792.77
6. Step 6: Final answer
   x = 17,558.87