Finding the Fourth Proportional to 5,271.33, 7,273.89 and 2,913.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,271.33 : 7,273.89 = 2,913.15 : x
2. Step 2: Convert to fraction form
   5,271.33/7,273.89 = 2,913.15/x
3. Step 3: Cross multiply
   5,271.33x = 7,273.89 × 2,913.15
4. Step 4: Simplify right side
   5,271.33x = 21,189,932.65
5. Step 5: Solve for x
   x = 21,189,932.65/5,271.33
6. Step 6: Final answer
   x = 4,019.85