Finding the Fourth Proportional to 7,003.16, 9,664.24 and 3,859.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.16 : 9,664.24 = 3,859.28 : x
2. Step 2: Convert to fraction form
   7,003.16/9,664.24 = 3,859.28/x
3. Step 3: Cross multiply
   7,003.16x = 9,664.24 × 3,859.28
4. Step 4: Simplify right side
   7,003.16x = 37,297,008.15
5. Step 5: Solve for x
   x = 37,297,008.15/7,003.16
6. Step 6: Final answer
   x = 5,325.74