Finding the Fourth Proportional to 12,662.16, 18,996.20 and 3,896.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.16 : 18,996.20 = 3,896.88 : x
2. Step 2: Convert to fraction form
   12,662.16/18,996.20 = 3,896.88/x
3. Step 3: Cross multiply
   12,662.16x = 18,996.20 × 3,896.88
4. Step 4: Simplify right side
   12,662.16x = 74,025,911.86
5. Step 5: Solve for x
   x = 74,025,911.86/12,662.16
6. Step 6: Final answer
   x = 5,846.23