Finding the Fourth Proportional to 6,895, 9,515.59 and 3,911.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,895 : 9,515.59 = 3,911.09 : x
2. Step 2: Convert to fraction form
   6,895/9,515.59 = 3,911.09/x
3. Step 3: Cross multiply
   6,895x = 9,515.59 × 3,911.09
4. Step 4: Simplify right side
   6,895x = 37,216,328.89
5. Step 5: Solve for x
   x = 37,216,328.89/6,895
6. Step 6: Final answer
   x = 5,397.58