Finding the Fourth Proportional to 11,136.15, 15,355.58 and 7,601.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,136.15 : 15,355.58 = 7,601.31 : x
2. Step 2: Convert to fraction form
   11,136.15/15,355.58 = 7,601.31/x
3. Step 3: Cross multiply
   11,136.15x = 15,355.58 × 7,601.31
4. Step 4: Simplify right side
   11,136.15x = 116,722,485.80
5. Step 5: Solve for x
   x = 116,722,485.80/11,136.15
6. Step 6: Final answer
   x = 10,481.40