Finding the Fourth Proportional to 5,072.78, 7,002.38 and 4,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,072.78 : 7,002.38 = 4,540.72 : x
2. Step 2: Convert to fraction form
   5,072.78/7,002.38 = 4,540.72/x
3. Step 3: Cross multiply
   5,072.78x = 7,002.38 × 4,540.72
4. Step 4: Simplify right side
   5,072.78x = 31,795,806.70
5. Step 5: Solve for x
   x = 31,795,806.70/5,072.78
6. Step 6: Final answer
   x = 6,267.93