Finding the Fourth Proportional to 8,136, 12,196.76 and 2,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,136 : 12,196.76 = 2,940.72 : x
2. Step 2: Convert to fraction form
   8,136/12,196.76 = 2,940.72/x
3. Step 3: Cross multiply
   8,136x = 12,196.76 × 2,940.72
4. Step 4: Simplify right side
   8,136x = 35,867,256.07
5. Step 5: Solve for x
   x = 35,867,256.07/8,136
6. Step 6: Final answer
   x = 4,408.46