Finding the Fourth Proportional to 5,228.86, 7,215.98 and 2,960.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,228.86 : 7,215.98 = 2,960.03 : x
2. Step 2: Convert to fraction form
   5,228.86/7,215.98 = 2,960.03/x
3. Step 3: Cross multiply
   5,228.86x = 7,215.98 × 2,960.03
4. Step 4: Simplify right side
   5,228.86x = 21,359,517.28
5. Step 5: Solve for x
   x = 21,359,517.28/5,228.86
6. Step 6: Final answer
   x = 4,084.93