Finding the Fourth Proportional to 11,216.31, 16,826.94 and 3,425.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,216.31 : 16,826.94 = 3,425.73 : x
2. Step 2: Convert to fraction form
   11,216.31/16,826.94 = 3,425.73/x
3. Step 3: Cross multiply
   11,216.31x = 16,826.94 × 3,425.73
4. Step 4: Simplify right side
   11,216.31x = 57,644,553.17
5. Step 5: Solve for x
   x = 57,644,553.17/11,216.31
6. Step 6: Final answer
   x = 5,139.35