Finding the Fourth Proportional to 5,222.18, 7,175.98 and 4,172.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.18 : 7,175.98 = 4,172.42 : x
2. Step 2: Convert to fraction form
   5,222.18/7,175.98 = 4,172.42/x
3. Step 3: Cross multiply
   5,222.18x = 7,175.98 × 4,172.42
4. Step 4: Simplify right side
   5,222.18x = 29,941,202.47
5. Step 5: Solve for x
   x = 29,941,202.47/5,222.18
6. Step 6: Final answer
   x = 5,733.47