Finding the Fourth Proportional to 5,108.42, 7,048.35 and 3,118.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,108.42 : 7,048.35 = 3,118.25 : x
2. Step 2: Convert to fraction form
   5,108.42/7,048.35 = 3,118.25/x
3. Step 3: Cross multiply
   5,108.42x = 7,048.35 × 3,118.25
4. Step 4: Simplify right side
   5,108.42x = 21,978,535.01
5. Step 5: Solve for x
   x = 21,978,535.01/5,108.42
6. Step 6: Final answer
   x = 4,302.41