Finding the Fourth Proportional to 10,610.28, 15,910.56 and 3,215.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,610.28 : 15,910.56 = 3,215.52 : x
2. Step 2: Convert to fraction form
   10,610.28/15,910.56 = 3,215.52/x
3. Step 3: Cross multiply
   10,610.28x = 15,910.56 × 3,215.52
4. Step 4: Simplify right side
   10,610.28x = 51,160,723.89
5. Step 5: Solve for x
   x = 51,160,723.89/10,610.28
6. Step 6: Final answer
   x = 4,821.81