Finding the Fourth Proportional to 7,515.69, 10,371.78 and 4,158.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,515.69 : 10,371.78 = 4,158.42 : x
2. Step 2: Convert to fraction form
   7,515.69/10,371.78 = 4,158.42/x
3. Step 3: Cross multiply
   7,515.69x = 10,371.78 × 4,158.42
4. Step 4: Simplify right side
   7,515.69x = 43,130,217.39
5. Step 5: Solve for x
   x = 43,130,217.39/7,515.69
6. Step 6: Final answer
   x = 5,738.69