Finding the Fourth Proportional to 22,155, 30,574.17 and 12,724.44

Step by Step Solution

1. Step 1: Write the proportion equation
   22,155 : 30,574.17 = 12,724.44 : x
2. Step 2: Convert to fraction form
   22,155/30,574.17 = 12,724.44/x
3. Step 3: Cross multiply
   22,155x = 30,574.17 × 12,724.44
4. Step 4: Simplify right side
   22,155x = 389,039,191.71
5. Step 5: Solve for x
   x = 389,039,191.71/22,155
6. Step 6: Final answer
   x = 17,559.88