Finding the Fourth Proportional to 3,986.31, 5,501.88 and 2,415.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.31 : 5,501.88 = 2,415.27 : x
2. Step 2: Convert to fraction form
   3,986.31/5,501.88 = 2,415.27/x
3. Step 3: Cross multiply
   3,986.31x = 5,501.88 × 2,415.27
4. Step 4: Simplify right side
   3,986.31x = 13,288,525.71
5. Step 5: Solve for x
   x = 13,288,525.71/3,986.31
6. Step 6: Final answer
   x = 3,333.54