Finding the Fourth Proportional to 9,162.20, 12,643.82 and 5,183.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.20 : 12,643.82 = 5,183.22 : x
2. Step 2: Convert to fraction form
   9,162.20/12,643.82 = 5,183.22/x
3. Step 3: Cross multiply
   9,162.20x = 12,643.82 × 5,183.22
4. Step 4: Simplify right side
   9,162.20x = 65,535,713.66
5. Step 5: Solve for x
   x = 65,535,713.66/9,162.20
6. Step 6: Final answer
   x = 7,152.84