Finding the Fourth Proportional to 5,269.72, 7,271.59 and 2,911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,269.72 : 7,271.59 = 2,911.72 : x
2. Step 2: Convert to fraction form
   5,269.72/7,271.59 = 2,911.72/x
3. Step 3: Cross multiply
   5,269.72x = 7,271.59 × 2,911.72
4. Step 4: Simplify right side
   5,269.72x = 21,172,834.03
5. Step 5: Solve for x
   x = 21,172,834.03/5,269.72
6. Step 6: Final answer
   x = 4,017.83