Finding the Fourth Proportional to 3,986.71, 5,975.46 and 3,525.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.71 : 5,975.46 = 3,525.39 : x
2. Step 2: Convert to fraction form
   3,986.71/5,975.46 = 3,525.39/x
3. Step 3: Cross multiply
   3,986.71x = 5,975.46 × 3,525.39
4. Step 4: Simplify right side
   3,986.71x = 21,065,826.93
5. Step 5: Solve for x
   x = 21,065,826.93/3,986.71
6. Step 6: Final answer
   x = 5,284.02