Finding the Fourth Proportional to 11,012.52, 16,519.23 and 3,221.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.52 : 16,519.23 = 3,221.31 : x
2. Step 2: Convert to fraction form
   11,012.52/16,519.23 = 3,221.31/x
3. Step 3: Cross multiply
   11,012.52x = 16,519.23 × 3,221.31
4. Step 4: Simplify right side
   11,012.52x = 53,213,560.79
5. Step 5: Solve for x
   x = 53,213,560.79/11,012.52
6. Step 6: Final answer
   x = 4,832.10