Finding the Fourth Proportional to 7,003.98, 9,665.48 and 3,860.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.98 : 9,665.48 = 3,860.15 : x
2. Step 2: Convert to fraction form
   7,003.98/9,665.48 = 3,860.15/x
3. Step 3: Cross multiply
   7,003.98x = 9,665.48 × 3,860.15
4. Step 4: Simplify right side
   7,003.98x = 37,310,163.94
5. Step 5: Solve for x
   x = 37,310,163.94/7,003.98
6. Step 6: Final answer
   x = 5,326.99