Finding the Fourth Proportional to 22,426.96, 30,947.37 and 12,866.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,426.96 : 30,947.37 = 12,866.74 : x
2. Step 2: Convert to fraction form
   22,426.96/30,947.37 = 12,866.74/x
3. Step 3: Cross multiply
   22,426.96x = 30,947.37 × 12,866.74
4. Step 4: Simplify right side
   22,426.96x = 398,191,763.47
5. Step 5: Solve for x
   x = 398,191,763.47/22,426.96
6. Step 6: Final answer
   x = 17,755.05