Finding the Fourth Proportional to 13,221.82, 19,803.57 and 8,016.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,221.82 : 19,803.57 = 8,016.76 : x
2. Step 2: Convert to fraction form
   13,221.82/19,803.57 = 8,016.76/x
3. Step 3: Cross multiply
   13,221.82x = 19,803.57 × 8,016.76
4. Step 4: Simplify right side
   13,221.82x = 158,760,467.83
5. Step 5: Solve for x
   x = 158,760,467.83/13,221.82
6. Step 6: Final answer
   x = 12,007.46