Finding the Fourth Proportional to 10,217.02, 15,321.54 and 3,976.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,217.02 : 15,321.54 = 3,976.21 : x
2. Step 2: Convert to fraction form
   10,217.02/15,321.54 = 3,976.21/x
3. Step 3: Cross multiply
   10,217.02x = 15,321.54 × 3,976.21
4. Step 4: Simplify right side
   10,217.02x = 60,921,660.56
5. Step 5: Solve for x
   x = 60,921,660.56/10,217.02
6. Step 6: Final answer
   x = 5,962.76