Finding the Fourth Proportional to 5,912.34, 8,871.52 and 3,939.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,912.34 : 8,871.52 = 3,939.32 : x
2. Step 2: Convert to fraction form
   5,912.34/8,871.52 = 3,939.32/x
3. Step 3: Cross multiply
   5,912.34x = 8,871.52 × 3,939.32
4. Step 4: Simplify right side
   5,912.34x = 34,947,756.17
5. Step 5: Solve for x
   x = 34,947,756.17/5,912.34
6. Step 6: Final answer
   x = 5,910.99