Finding the Fourth Proportional to 7,105.41, 9,805.91 and 3,918.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.41 : 9,805.91 = 3,918.69 : x
2. Step 2: Convert to fraction form
   7,105.41/9,805.91 = 3,918.69/x
3. Step 3: Cross multiply
   7,105.41x = 9,805.91 × 3,918.69
4. Step 4: Simplify right side
   7,105.41x = 38,426,301.86
5. Step 5: Solve for x
   x = 38,426,301.86/7,105.41
6. Step 6: Final answer
   x = 5,408.03