Finding the Fourth Proportional to 21,081.26, 31,623.75 and 5,499.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,081.26 : 31,623.75 = 5,499.02 : x
2. Step 2: Convert to fraction form
   21,081.26/31,623.75 = 5,499.02/x
3. Step 3: Cross multiply
   21,081.26x = 31,623.75 × 5,499.02
4. Step 4: Simplify right side
   21,081.26x = 173,899,633.73
5. Step 5: Solve for x
   x = 173,899,633.73/21,081.26
6. Step 6: Final answer
   x = 8,249.02