Finding the Fourth Proportional to 22,021.50, 30,389.67 and 12,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,021.50 : 30,389.67 = 12,085.50 : x
2. Step 2: Convert to fraction form
   22,021.50/30,389.67 = 12,085.50/x
3. Step 3: Cross multiply
   22,021.50x = 30,389.67 × 12,085.50
4. Step 4: Simplify right side
   22,021.50x = 367,274,356.79
5. Step 5: Solve for x
   x = 367,274,356.79/22,021.50
6. Step 6: Final answer
   x = 16,677.99