Finding the Fourth Proportional to 3,922.50, 5,401.06 and 3,609.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,922.50 : 5,401.06 = 3,609.03 : x
2. Step 2: Convert to fraction form
   3,922.50/5,401.06 = 3,609.03/x
3. Step 3: Cross multiply
   3,922.50x = 5,401.06 × 3,609.03
4. Step 4: Simplify right side
   3,922.50x = 19,492,587.57
5. Step 5: Solve for x
   x = 19,492,587.57/3,922.50
6. Step 6: Final answer
   x = 4,969.43