Finding the Fourth Proportional to 11,054.71, 16,559.86 and 5,491.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,054.71 : 16,559.86 = 5,491.23 : x
2. Step 2: Convert to fraction form
   11,054.71/16,559.86 = 5,491.23/x
3. Step 3: Cross multiply
   11,054.71x = 16,559.86 × 5,491.23
4. Step 4: Simplify right side
   11,054.71x = 90,934,000.03
5. Step 5: Solve for x
   x = 90,934,000.03/11,054.71
6. Step 6: Final answer
   x = 8,225.82