Finding the Fourth Proportional to 10,574.88, 15,859.20 and 3,996.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,574.88 : 15,859.20 = 3,996.16 : x
2. Step 2: Convert to fraction form
   10,574.88/15,859.20 = 3,996.16/x
3. Step 3: Cross multiply
   10,574.88x = 15,859.20 × 3,996.16
4. Step 4: Simplify right side
   10,574.88x = 63,375,900.67
5. Step 5: Solve for x
   x = 63,375,900.67/10,574.88
6. Step 6: Final answer
   x = 5,993.06