Finding the Fourth Proportional to 5,175.45, 7,142.18 and 2,817.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,175.45 : 7,142.18 = 2,817.59 : x
2. Step 2: Convert to fraction form
   5,175.45/7,142.18 = 2,817.59/x
3. Step 3: Cross multiply
   5,175.45x = 7,142.18 × 2,817.59
4. Step 4: Simplify right side
   5,175.45x = 20,123,685.15
5. Step 5: Solve for x
   x = 20,123,685.15/5,175.45
6. Step 6: Final answer
   x = 3,888.30