Finding the Fourth Proportional to 14,789.05, 20,408.57 and 8,074.42

Step by Step Solution

1. Step 1: Write the proportion equation
   14,789.05 : 20,408.57 = 8,074.42 : x
2. Step 2: Convert to fraction form
   14,789.05/20,408.57 = 8,074.42/x
3. Step 3: Cross multiply
   14,789.05x = 20,408.57 × 8,074.42
4. Step 4: Simplify right side
   14,789.05x = 164,787,325.41
5. Step 5: Solve for x
   x = 164,787,325.41/14,789.05
6. Step 6: Final answer
   x = 11,142.52