Finding the Fourth Proportional to 22,158.76, 30,578.88 and 12,727.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,158.76 : 30,578.88 = 12,727.39 : x
2. Step 2: Convert to fraction form
   22,158.76/30,578.88 = 12,727.39/x
3. Step 3: Cross multiply
   22,158.76x = 30,578.88 × 12,727.39
4. Step 4: Simplify right side
   22,158.76x = 389,189,331.52
5. Step 5: Solve for x
   x = 389,189,331.52/22,158.76
6. Step 6: Final answer
   x = 17,563.68