Finding the Fourth Proportional to 5,288.52, 7,918.18 and 3,986.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,288.52 : 7,918.18 = 3,986.04 : x
2. Step 2: Convert to fraction form
   5,288.52/7,918.18 = 3,986.04/x
3. Step 3: Cross multiply
   5,288.52x = 7,918.18 × 3,986.04
4. Step 4: Simplify right side
   5,288.52x = 31,562,182.21
5. Step 5: Solve for x
   x = 31,562,182.21/5,288.52
6. Step 6: Final answer
   x = 5,968.06