Finding the Fourth Proportional to 5,200.17, 7,176.38 and 3,105.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.17 : 7,176.38 = 3,105.51 : x
2. Step 2: Convert to fraction form
   5,200.17/7,176.38 = 3,105.51/x
3. Step 3: Cross multiply
   5,200.17x = 7,176.38 × 3,105.51
4. Step 4: Simplify right side
   5,200.17x = 22,286,304.33
5. Step 5: Solve for x
   x = 22,286,304.33/5,200.17
6. Step 6: Final answer
   x = 4,285.69