Finding the Fourth Proportional to 22,259.40, 30,721.22 and 12,826.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,259.40 : 30,721.22 = 12,826.12 : x
2. Step 2: Convert to fraction form
   22,259.40/30,721.22 = 12,826.12/x
3. Step 3: Cross multiply
   22,259.40x = 30,721.22 × 12,826.12
4. Step 4: Simplify right side
   22,259.40x = 394,034,054.27
5. Step 5: Solve for x
   x = 394,034,054.27/22,259.40
6. Step 6: Final answer
   x = 17,701.92