Finding the Fourth Proportional to 11,201.31, 16,790.94 and 5,356.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,201.31 : 16,790.94 = 5,356.55 : x
2. Step 2: Convert to fraction form
   11,201.31/16,790.94 = 5,356.55/x
3. Step 3: Cross multiply
   11,201.31x = 16,790.94 × 5,356.55
4. Step 4: Simplify right side
   11,201.31x = 89,941,509.66
5. Step 5: Solve for x
   x = 89,941,509.66/11,201.31
6. Step 6: Final answer
   x = 8,029.55