Finding the Fourth Proportional to 9,136.56, 12,608.40 and 4,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.56 : 12,608.40 = 4,944.72 : x
2. Step 2: Convert to fraction form
   9,136.56/12,608.40 = 4,944.72/x
3. Step 3: Cross multiply
   9,136.56x = 12,608.40 × 4,944.72
4. Step 4: Simplify right side
   9,136.56x = 62,345,007.65
5. Step 5: Solve for x
   x = 62,345,007.65/9,136.56
6. Step 6: Final answer
   x = 6,823.69