Finding the Fourth Proportional to 7,111.91, 10,668.97 and 3,164.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.91 : 10,668.97 = 3,164.54 : x
2. Step 2: Convert to fraction form
   7,111.91/10,668.97 = 3,164.54/x
3. Step 3: Cross multiply
   7,111.91x = 10,668.97 × 3,164.54
4. Step 4: Simplify right side
   7,111.91x = 33,762,425.18
5. Step 5: Solve for x
   x = 33,762,425.18/7,111.91
6. Step 6: Final answer
   x = 4,747.31