Finding the Fourth Proportional to 5,171.67, 7,746.89 and 3,500.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,171.67 : 7,746.89 = 3,500.55 : x
2. Step 2: Convert to fraction form
   5,171.67/7,746.89 = 3,500.55/x
3. Step 3: Cross multiply
   5,171.67x = 7,746.89 × 3,500.55
4. Step 4: Simplify right side
   5,171.67x = 27,118,358.29
5. Step 5: Solve for x
   x = 27,118,358.29/5,171.67
6. Step 6: Final answer
   x = 5,243.64