Finding the Fourth Proportional to 22,418.48, 30,936.72 and 12,346.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,418.48 : 30,936.72 = 12,346.80 : x
2. Step 2: Convert to fraction form
   22,418.48/30,936.72 = 12,346.80/x
3. Step 3: Cross multiply
   22,418.48x = 30,936.72 × 12,346.80
4. Step 4: Simplify right side
   22,418.48x = 381,969,494.50
5. Step 5: Solve for x
   x = 381,969,494.50/22,418.48
6. Step 6: Final answer
   x = 17,038.15