Finding the Fourth Proportional to 3,936.09, 5,426.76 and 3,225.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.09 : 5,426.76 = 3,225.32 : x
2. Step 2: Convert to fraction form
   3,936.09/5,426.76 = 3,225.32/x
3. Step 3: Cross multiply
   3,936.09x = 5,426.76 × 3,225.32
4. Step 4: Simplify right side
   3,936.09x = 17,503,010.43
5. Step 5: Solve for x
   x = 17,503,010.43/3,936.09
6. Step 6: Final answer
   x = 4,446.80