Finding the Fourth Proportional to 5,488.76, 7,571.88 and 3,996

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.76 : 7,571.88 = 3,996 : x
2. Step 2: Convert to fraction form
   5,488.76/7,571.88 = 3,996/x
3. Step 3: Cross multiply
   5,488.76x = 7,571.88 × 3,996
4. Step 4: Simplify right side
   5,488.76x = 30,257,232.48
5. Step 5: Solve for x
   x = 30,257,232.48/5,488.76
6. Step 6: Final answer
   x = 5,512.58