Finding the Fourth Proportional to 5,871.81, 8,107.35 and 3,779.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,871.81 : 8,107.35 = 3,779.58 : x
2. Step 2: Convert to fraction form
   5,871.81/8,107.35 = 3,779.58/x
3. Step 3: Cross multiply
   5,871.81x = 8,107.35 × 3,779.58
4. Step 4: Simplify right side
   5,871.81x = 30,642,377.91
5. Step 5: Solve for x
   x = 30,642,377.91/5,871.81
6. Step 6: Final answer
   x = 5,218.56