Finding the Fourth Proportional to 5,245.57, 7,171.33 and 5,245.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,245.57 : 7,171.33 = 5,245.57 : x
2. Step 2: Convert to fraction form
   5,245.57/7,171.33 = 5,245.57/x
3. Step 3: Cross multiply
   5,245.57x = 7,171.33 × 5,245.57
4. Step 4: Simplify right side
   5,245.57x = 37,617,713.51
5. Step 5: Solve for x
   x = 37,617,713.51/5,245.57
6. Step 6: Final answer
   x = 7,171.33