Finding the Fourth Proportional to 5,698.95, 7,868.15 and 3,909.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,698.95 : 7,868.15 = 3,909.42 : x
2. Step 2: Convert to fraction form
   5,698.95/7,868.15 = 3,909.42/x
3. Step 3: Cross multiply
   5,698.95x = 7,868.15 × 3,909.42
4. Step 4: Simplify right side
   5,698.95x = 30,759,942.21
5. Step 5: Solve for x
   x = 30,759,942.21/5,698.95
6. Step 6: Final answer
   x = 5,397.48