Finding the Fourth Proportional to 5,381.83, 7,422.46 and 3,871.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,381.83 : 7,422.46 = 3,871.59 : x
2. Step 2: Convert to fraction form
   5,381.83/7,422.46 = 3,871.59/x
3. Step 3: Cross multiply
   5,381.83x = 7,422.46 × 3,871.59
4. Step 4: Simplify right side
   5,381.83x = 28,736,721.91
5. Step 5: Solve for x
   x = 28,736,721.91/5,381.83
6. Step 6: Final answer
   x = 5,339.58