Finding the Fourth Proportional to 4,754.27, 7,128.71 and 3,979.10

Step by Step Solution

1. Step 1: Write the proportion equation
   4,754.27 : 7,128.71 = 3,979.10 : x
2. Step 2: Convert to fraction form
   4,754.27/7,128.71 = 3,979.10/x
3. Step 3: Cross multiply
   4,754.27x = 7,128.71 × 3,979.10
4. Step 4: Simplify right side
   4,754.27x = 28,365,862.81
5. Step 5: Solve for x
   x = 28,365,862.81/4,754.27
6. Step 6: Final answer
   x = 5,966.39