Finding the Fourth Proportional to 7,144.84, 9,859.61 and 3,958.27

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.84 : 9,859.61 = 3,958.27 : x
2. Step 2: Convert to fraction form
   7,144.84/9,859.61 = 3,958.27/x
3. Step 3: Cross multiply
   7,144.84x = 9,859.61 × 3,958.27
4. Step 4: Simplify right side
   7,144.84x = 39,027,009.35
5. Step 5: Solve for x
   x = 39,027,009.35/7,144.84
6. Step 6: Final answer
   x = 5,462.27