Finding the Fourth Proportional to 9,396.78, 12,967.89 and 5,205.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,396.78 : 12,967.89 = 5,205.03 : x
2. Step 2: Convert to fraction form
   9,396.78/12,967.89 = 5,205.03/x
3. Step 3: Cross multiply
   9,396.78x = 12,967.89 × 5,205.03
4. Step 4: Simplify right side
   9,396.78x = 67,498,191.65
5. Step 5: Solve for x
   x = 67,498,191.65/9,396.78
6. Step 6: Final answer
   x = 7,183.12