Finding the Fourth Proportional to 5,215.59, 7,196.35 and 2,976.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,215.59 : 7,196.35 = 2,976.75 : x
2. Step 2: Convert to fraction form
   5,215.59/7,196.35 = 2,976.75/x
3. Step 3: Cross multiply
   5,215.59x = 7,196.35 × 2,976.75
4. Step 4: Simplify right side
   5,215.59x = 21,421,752.85
5. Step 5: Solve for x
   x = 21,421,752.85/5,215.59
6. Step 6: Final answer
   x = 4,107.25