Finding the Fourth Proportional to 5,491.05, 8,239.43 and 3,934.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,491.05 : 8,239.43 = 3,934.18 : x
2. Step 2: Convert to fraction form
   5,491.05/8,239.43 = 3,934.18/x
3. Step 3: Cross multiply
   5,491.05x = 8,239.43 × 3,934.18
4. Step 4: Simplify right side
   5,491.05x = 32,415,400.72
5. Step 5: Solve for x
   x = 32,415,400.72/5,491.05
6. Step 6: Final answer
   x = 5,903.32