Finding the Fourth Proportional to 9,515.69, 13,134.89 and 5,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,515.69 : 13,134.89 = 5,540.15 : x
2. Step 2: Convert to fraction form
   9,515.69/13,134.89 = 5,540.15/x
3. Step 3: Cross multiply
   9,515.69x = 13,134.89 × 5,540.15
4. Step 4: Simplify right side
   9,515.69x = 72,769,167.46
5. Step 5: Solve for x
   x = 72,769,167.46/9,515.69
6. Step 6: Final answer
   x = 7,647.29