Finding the Fourth Proportional to 5,269.12, 7,271.82 and 2,911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,269.12 : 7,271.82 = 2,911.72 : x
2. Step 2: Convert to fraction form
   5,269.12/7,271.82 = 2,911.72/x
3. Step 3: Cross multiply
   5,269.12x = 7,271.82 × 2,911.72
4. Step 4: Simplify right side
   5,269.12x = 21,173,503.73
5. Step 5: Solve for x
   x = 21,173,503.73/5,269.12
6. Step 6: Final answer
   x = 4,018.41