Finding the Fourth Proportional to 5,787.40, 7,990.02 and 3,801.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,787.40 : 7,990.02 = 3,801.42 : x
2. Step 2: Convert to fraction form
   5,787.40/7,990.02 = 3,801.42/x
3. Step 3: Cross multiply
   5,787.40x = 7,990.02 × 3,801.42
4. Step 4: Simplify right side
   5,787.40x = 30,373,421.83
5. Step 5: Solve for x
   x = 30,373,421.83/5,787.40
6. Step 6: Final answer
   x = 5,248.20