Finding the Fourth Proportional to 8,345.27, 12,517.59 and 8,136.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,345.27 : 12,517.59 = 8,136.02 : x
2. Step 2: Convert to fraction form
   8,345.27/12,517.59 = 8,136.02/x
3. Step 3: Cross multiply
   8,345.27x = 12,517.59 × 8,136.02
4. Step 4: Simplify right side
   8,345.27x = 101,843,362.59
5. Step 5: Solve for x
   x = 101,843,362.59/8,345.27
6. Step 6: Final answer
   x = 12,203.72