Finding the Fourth Proportional to 4,811.33, 7,213.89 and 3,162.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,811.33 : 7,213.89 = 3,162.88 : x
2. Step 2: Convert to fraction form
   4,811.33/7,213.89 = 3,162.88/x
3. Step 3: Cross multiply
   4,811.33x = 7,213.89 × 3,162.88
4. Step 4: Simplify right side
   4,811.33x = 22,816,668.40
5. Step 5: Solve for x
   x = 22,816,668.40/4,811.33
6. Step 6: Final answer
   x = 4,742.28