Finding the Fourth Proportional to 9,408.15, 12,982.73 and 5,216.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,408.15 : 12,982.73 = 5,216.67 : x
2. Step 2: Convert to fraction form
   9,408.15/12,982.73 = 5,216.67/x
3. Step 3: Cross multiply
   9,408.15x = 12,982.73 × 5,216.67
4. Step 4: Simplify right side
   9,408.15x = 67,726,592.03
5. Step 5: Solve for x
   x = 67,726,592.03/9,408.15
6. Step 6: Final answer
   x = 7,198.72