Finding the Fourth Proportional to 11,221.32, 16,826.81 and 3,321.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,221.32 : 16,826.81 = 3,321.01 : x
2. Step 2: Convert to fraction form
   11,221.32/16,826.81 = 3,321.01/x
3. Step 3: Cross multiply
   11,221.32x = 16,826.81 × 3,321.01
4. Step 4: Simplify right side
   11,221.32x = 55,882,003.88
5. Step 5: Solve for x
   x = 55,882,003.88/11,221.32
6. Step 6: Final answer
   x = 4,979.98