Finding the Fourth Proportional to 4,105.98, 6,145.20 and 3,126.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,105.98 : 6,145.20 = 3,126.42 : x
2. Step 2: Convert to fraction form
   4,105.98/6,145.20 = 3,126.42/x
3. Step 3: Cross multiply
   4,105.98x = 6,145.20 × 3,126.42
4. Step 4: Simplify right side
   4,105.98x = 19,212,476.18
5. Step 5: Solve for x
   x = 19,212,476.18/4,105.98
6. Step 6: Final answer
   x = 4,679.15