Finding the Fourth Proportional to 22,354.50, 30,849.21 and 12,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,354.50 : 30,849.21 = 12,418.50 : x
2. Step 2: Convert to fraction form
   22,354.50/30,849.21 = 12,418.50/x
3. Step 3: Cross multiply
   22,354.50x = 30,849.21 × 12,418.50
4. Step 4: Simplify right side
   22,354.50x = 383,100,914.39
5. Step 5: Solve for x
   x = 383,100,914.39/22,354.50
6. Step 6: Final answer
   x = 17,137.53