Finding the Fourth Proportional to 5,613.91, 8,411.31 and 3,967.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,613.91 : 8,411.31 = 3,967.30 : x
2. Step 2: Convert to fraction form
   5,613.91/8,411.31 = 3,967.30/x
3. Step 3: Cross multiply
   5,613.91x = 8,411.31 × 3,967.30
4. Step 4: Simplify right side
   5,613.91x = 33,370,190.16
5. Step 5: Solve for x
   x = 33,370,190.16/5,613.91
6. Step 6: Final answer
   x = 5,944.20