Finding the Fourth Proportional to 12,976.98, 17,896.28 and 8,662.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.98 : 17,896.28 = 8,662.48 : x
2. Step 2: Convert to fraction form
   12,976.98/17,896.28 = 8,662.48/x
3. Step 3: Cross multiply
   12,976.98x = 17,896.28 × 8,662.48
4. Step 4: Simplify right side
   12,976.98x = 155,026,079.52
5. Step 5: Solve for x
   x = 155,026,079.52/12,976.98
6. Step 6: Final answer
   x = 11,946.24