Finding the Fourth Proportional to 3,852.23, 5,311.25 and 3,215.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,852.23 : 5,311.25 = 3,215.08 : x
2. Step 2: Convert to fraction form
   3,852.23/5,311.25 = 3,215.08/x
3. Step 3: Cross multiply
   3,852.23x = 5,311.25 × 3,215.08
4. Step 4: Simplify right side
   3,852.23x = 17,076,096.27
5. Step 5: Solve for x
   x = 17,076,096.27/3,852.23
6. Step 6: Final answer
   x = 4,432.79