Finding the Fourth Proportional to 22,422.69, 30,942.68 and 12,213.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,422.69 : 30,942.68 = 12,213.50 : x
2. Step 2: Convert to fraction form
   22,422.69/30,942.68 = 12,213.50/x
3. Step 3: Cross multiply
   22,422.69x = 30,942.68 × 12,213.50
4. Step 4: Simplify right side
   22,422.69x = 377,918,206.40
5. Step 5: Solve for x
   x = 377,918,206.40/22,422.69
6. Step 6: Final answer
   x = 16,854.28