Finding the Fourth Proportional to 16,401.11, 22,634.91 and 13,408.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,401.11 : 22,634.91 = 13,408.56 : x
2. Step 2: Convert to fraction form
   16,401.11/22,634.91 = 13,408.56/x
3. Step 3: Cross multiply
   16,401.11x = 22,634.91 × 13,408.56
4. Step 4: Simplify right side
   16,401.11x = 303,501,548.83
5. Step 5: Solve for x
   x = 303,501,548.83/16,401.11
6. Step 6: Final answer
   x = 18,504.95