Finding the Fourth Proportional to 8,984.22, 12,399.32 and 5,447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,984.22 : 12,399.32 = 5,447.42 : x
2. Step 2: Convert to fraction form
   8,984.22/12,399.32 = 5,447.42/x
3. Step 3: Cross multiply
   8,984.22x = 12,399.32 × 5,447.42
4. Step 4: Simplify right side
   8,984.22x = 67,544,303.75
5. Step 5: Solve for x
   x = 67,544,303.75/8,984.22
6. Step 6: Final answer
   x = 7,518.10