Finding the Fourth Proportional to 5,300.21, 7,942.79 and 3,902.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.21 : 7,942.79 = 3,902.58 : x
2. Step 2: Convert to fraction form
   5,300.21/7,942.79 = 3,902.58/x
3. Step 3: Cross multiply
   5,300.21x = 7,942.79 × 3,902.58
4. Step 4: Simplify right side
   5,300.21x = 30,997,353.89
5. Step 5: Solve for x
   x = 30,997,353.89/5,300.21
6. Step 6: Final answer
   x = 5,848.33