Finding the Fourth Proportional to 3,715.56, 5,570.10 and 3,171.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.56 : 5,570.10 = 3,171.24 : x
2. Step 2: Convert to fraction form
   3,715.56/5,570.10 = 3,171.24/x
3. Step 3: Cross multiply
   3,715.56x = 5,570.10 × 3,171.24
4. Step 4: Simplify right side
   3,715.56x = 17,664,123.92
5. Step 5: Solve for x
   x = 17,664,123.92/3,715.56
6. Step 6: Final answer
   x = 4,754.09