Finding the Fourth Proportional to 10,217.88, 15,327.81 and 3,978.41

Step by Step Solution

1. Step 1: Write the proportion equation
   10,217.88 : 15,327.81 = 3,978.41 : x
2. Step 2: Convert to fraction form
   10,217.88/15,327.81 = 3,978.41/x
3. Step 3: Cross multiply
   10,217.88x = 15,327.81 × 3,978.41
4. Step 4: Simplify right side
   10,217.88x = 60,980,235.94
5. Step 5: Solve for x
   x = 60,980,235.94/10,217.88
6. Step 6: Final answer
   x = 5,967.99