Finding the Fourth Proportional to 12,896.01, 17,799.66 and 7,863

Step by Step Solution

1. Step 1: Write the proportion equation
   12,896.01 : 17,799.66 = 7,863 : x
2. Step 2: Convert to fraction form
   12,896.01/17,799.66 = 7,863/x
3. Step 3: Cross multiply
   12,896.01x = 17,799.66 × 7,863
4. Step 4: Simplify right side
   12,896.01x = 139,958,687.27
5. Step 5: Solve for x
   x = 139,958,687.27/12,896.01
6. Step 6: Final answer
   x = 10,852.87