Finding the Fourth Proportional to 19,976.06, 27,571.76 and 12,016.76

Step by Step Solution

1. Step 1: Write the proportion equation
   19,976.06 : 27,571.76 = 12,016.76 : x
2. Step 2: Convert to fraction form
   19,976.06/27,571.76 = 12,016.76/x
3. Step 3: Cross multiply
   19,976.06x = 27,571.76 × 12,016.76
4. Step 4: Simplify right side
   19,976.06x = 331,323,024.76
5. Step 5: Solve for x
   x = 331,323,024.76/19,976.06
6. Step 6: Final answer
   x = 16,586.01