Finding the Fourth Proportional to 10,805.42, 16,210.74 and 5,538.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,805.42 : 16,210.74 = 5,538.26 : x
2. Step 2: Convert to fraction form
   10,805.42/16,210.74 = 5,538.26/x
3. Step 3: Cross multiply
   10,805.42x = 16,210.74 × 5,538.26
4. Step 4: Simplify right side
   10,805.42x = 89,779,292.91
5. Step 5: Solve for x
   x = 89,779,292.91/10,805.42
6. Step 6: Final answer
   x = 8,308.73