Finding the Fourth Proportional to 7,322.30, 10,104.78 and 3,965.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,322.30 : 10,104.78 = 3,965.09 : x
2. Step 2: Convert to fraction form
   7,322.30/10,104.78 = 3,965.09/x
3. Step 3: Cross multiply
   7,322.30x = 10,104.78 × 3,965.09
4. Step 4: Simplify right side
   7,322.30x = 40,066,362.13
5. Step 5: Solve for x
   x = 40,066,362.13/7,322.30
6. Step 6: Final answer
   x = 5,471.83