Finding the Fourth Proportional to 24,396.72, 33,667.44 and 13,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   24,396.72 : 33,667.44 = 13,218.72 : x
2. Step 2: Convert to fraction form
   24,396.72/33,667.44 = 13,218.72/x
3. Step 3: Cross multiply
   24,396.72x = 33,667.44 × 13,218.72
4. Step 4: Simplify right side
   24,396.72x = 445,040,462.48
5. Step 5: Solve for x
   x = 445,040,462.48/24,396.72
6. Step 6: Final answer
   x = 18,241.82