Finding the Fourth Proportional to 22,299.18, 33,419.43 and 12,443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,299.18 : 33,419.43 = 12,443.10 : x
2. Step 2: Convert to fraction form
   22,299.18/33,419.43 = 12,443.10/x
3. Step 3: Cross multiply
   22,299.18x = 33,419.43 × 12,443.10
4. Step 4: Simplify right side
   22,299.18x = 415,841,309.43
5. Step 5: Solve for x
   x = 415,841,309.43/22,299.18
6. Step 6: Final answer
   x = 18,648.28