Finding the Fourth Proportional to 5,174.89, 7,142.88 and 4,910.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,174.89 : 7,142.88 = 4,910.42 : x
2. Step 2: Convert to fraction form
   5,174.89/7,142.88 = 4,910.42/x
3. Step 3: Cross multiply
   5,174.89x = 7,142.88 × 4,910.42
4. Step 4: Simplify right side
   5,174.89x = 35,074,577.08
5. Step 5: Solve for x
   x = 35,074,577.08/5,174.89
6. Step 6: Final answer
   x = 6,777.84