Finding the Fourth Proportional to 8,106.78, 12,096.69 and 7,057.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,106.78 : 12,096.69 = 7,057.02 : x
2. Step 2: Convert to fraction form
   8,106.78/12,096.69 = 7,057.02/x
3. Step 3: Cross multiply
   8,106.78x = 12,096.69 × 7,057.02
4. Step 4: Simplify right side
   8,106.78x = 85,366,583.26
5. Step 5: Solve for x
   x = 85,366,583.26/8,106.78
6. Step 6: Final answer
   x = 10,530.27