Finding the Fourth Proportional to 3,808.72, 5,697.28 and 3,575.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,808.72 : 5,697.28 = 3,575.44 : x
2. Step 2: Convert to fraction form
   3,808.72/5,697.28 = 3,575.44/x
3. Step 3: Cross multiply
   3,808.72x = 5,697.28 × 3,575.44
4. Step 4: Simplify right side
   3,808.72x = 20,370,259.62
5. Step 5: Solve for x
   x = 20,370,259.62/3,808.72
6. Step 6: Final answer
   x = 5,348.33