Finding the Fourth Proportional to 9,515.72, 13,136.10 and 5,535.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,515.72 : 13,136.10 = 5,535.38 : x
2. Step 2: Convert to fraction form
   9,515.72/13,136.10 = 5,535.38/x
3. Step 3: Cross multiply
   9,515.72x = 13,136.10 × 5,535.38
4. Step 4: Simplify right side
   9,515.72x = 72,713,305.22
5. Step 5: Solve for x
   x = 72,713,305.22/9,515.72
6. Step 6: Final answer
   x = 7,641.39