Finding the Fourth Proportional to 3,870.99, 5,330.24 and 3,196.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.99 : 5,330.24 = 3,196.26 : x
2. Step 2: Convert to fraction form
   3,870.99/5,330.24 = 3,196.26/x
3. Step 3: Cross multiply
   3,870.99x = 5,330.24 × 3,196.26
4. Step 4: Simplify right side
   3,870.99x = 17,036,828.91
5. Step 5: Solve for x
   x = 17,036,828.91/3,870.99
6. Step 6: Final answer
   x = 4,401.16