Finding the Fourth Proportional to 5,286.09, 7,294.52 and 2,928.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,286.09 : 7,294.52 = 2,928.15 : x
2. Step 2: Convert to fraction form
   5,286.09/7,294.52 = 2,928.15/x
3. Step 3: Cross multiply
   5,286.09x = 7,294.52 × 2,928.15
4. Step 4: Simplify right side
   5,286.09x = 21,359,434.10
5. Step 5: Solve for x
   x = 21,359,434.10/5,286.09
6. Step 6: Final answer
   x = 4,040.69