Finding the Fourth Proportional to 11,221.82, 16,827.56 and 3,321.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,221.82 : 16,827.56 = 3,321.51 : x
2. Step 2: Convert to fraction form
   11,221.82/16,827.56 = 3,321.51/x
3. Step 3: Cross multiply
   11,221.82x = 16,827.56 × 3,321.51
4. Step 4: Simplify right side
   11,221.82x = 55,892,892.21
5. Step 5: Solve for x
   x = 55,892,892.21/11,221.82
6. Step 6: Final answer
   x = 4,980.73