Finding the Fourth Proportional to 10,212.24, 15,311.16 and 3,967.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,212.24 : 15,311.16 = 3,967.05 : x
2. Step 2: Convert to fraction form
   10,212.24/15,311.16 = 3,967.05/x
3. Step 3: Cross multiply
   10,212.24x = 15,311.16 × 3,967.05
4. Step 4: Simplify right side
   10,212.24x = 60,740,137.28
5. Step 5: Solve for x
   x = 60,740,137.28/10,212.24
6. Step 6: Final answer
   x = 5,947.78