Finding the Fourth Proportional to 3,932.72, 5,896.22 and 1,986.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.72 : 5,896.22 = 1,986.30 : x
2. Step 2: Convert to fraction form
   3,932.72/5,896.22 = 1,986.30/x
3. Step 3: Cross multiply
   3,932.72x = 5,896.22 × 1,986.30
4. Step 4: Simplify right side
   3,932.72x = 11,711,661.79
5. Step 5: Solve for x
   x = 11,711,661.79/3,932.72
6. Step 6: Final answer
   x = 2,978.01