Finding the Fourth Proportional to 24,396.78, 33,667.56 and 13,218.78

Step by Step Solution

1. Step 1: Write the proportion equation
   24,396.78 : 33,667.56 = 13,218.78 : x
2. Step 2: Convert to fraction form
   24,396.78/33,667.56 = 13,218.78/x
3. Step 3: Cross multiply
   24,396.78x = 33,667.56 × 13,218.78
4. Step 4: Simplify right side
   24,396.78x = 445,044,068.78
5. Step 5: Solve for x
   x = 445,044,068.78/24,396.78
6. Step 6: Final answer
   x = 18,241.92