Finding the Fourth Proportional to 21,653.72, 32,468.27 and 8,498.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,653.72 : 32,468.27 = 8,498.91 : x
2. Step 2: Convert to fraction form
   21,653.72/32,468.27 = 8,498.91/x
3. Step 3: Cross multiply
   21,653.72x = 32,468.27 × 8,498.91
4. Step 4: Simplify right side
   21,653.72x = 275,944,862.09
5. Step 5: Solve for x
   x = 275,944,862.09/21,653.72
6. Step 6: Final answer
   x = 12,743.53