Finding the Fourth Proportional to 22,089.39, 30,501.76 and 20,486.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,089.39 : 30,501.76 = 20,486.71 : x
2. Step 2: Convert to fraction form
   22,089.39/30,501.76 = 20,486.71/x
3. Step 3: Cross multiply
   22,089.39x = 30,501.76 × 20,486.71
4. Step 4: Simplify right side
   22,089.39x = 624,880,545.73
5. Step 5: Solve for x
   x = 624,880,545.73/22,089.39
6. Step 6: Final answer
   x = 28,288.71