Finding the Fourth Proportional to 22,426.77, 30,948.30 and 12,868.26

Step by Step Solution

1. Step 1: Write the proportion equation
   22,426.77 : 30,948.30 = 12,868.26 : x
2. Step 2: Convert to fraction form
   22,426.77/30,948.30 = 12,868.26/x
3. Step 3: Cross multiply
   22,426.77x = 30,948.30 × 12,868.26
4. Step 4: Simplify right side
   22,426.77x = 398,250,770.96
5. Step 5: Solve for x
   x = 398,250,770.96/22,426.77
6. Step 6: Final answer
   x = 17,757.83