Finding the Fourth Proportional to 9,136.82, 12,608.11 and 5,158.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.82 : 12,608.11 = 5,158.33 : x
2. Step 2: Convert to fraction form
   9,136.82/12,608.11 = 5,158.33/x
3. Step 3: Cross multiply
   9,136.82x = 12,608.11 × 5,158.33
4. Step 4: Simplify right side
   9,136.82x = 65,036,766.98
5. Step 5: Solve for x
   x = 65,036,766.98/9,136.82
6. Step 6: Final answer
   x = 7,118.09