Finding the Fourth Proportional to 11,201.31, 16,805.61 and 5,358.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,201.31 : 16,805.61 = 5,358.38 : x
2. Step 2: Convert to fraction form
   11,201.31/16,805.61 = 5,358.38/x
3. Step 3: Cross multiply
   11,201.31x = 16,805.61 × 5,358.38
4. Step 4: Simplify right side
   11,201.31x = 90,050,760.48
5. Step 5: Solve for x
   x = 90,050,760.48/11,201.31
6. Step 6: Final answer
   x = 8,039.31