Finding the Fourth Proportional to 3,613.46, 5,412.72 and 3,175.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.46 : 5,412.72 = 3,175.28 : x
2. Step 2: Convert to fraction form
   3,613.46/5,412.72 = 3,175.28/x
3. Step 3: Cross multiply
   3,613.46x = 5,412.72 × 3,175.28
4. Step 4: Simplify right side
   3,613.46x = 17,186,901.56
5. Step 5: Solve for x
   x = 17,186,901.56/3,613.46
6. Step 6: Final answer
   x = 4,756.36