Finding the Fourth Proportional to 21,648.24, 32,486.94 and 8,499.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,648.24 : 32,486.94 = 8,499.06 : x
2. Step 2: Convert to fraction form
   21,648.24/32,486.94 = 8,499.06/x
3. Step 3: Cross multiply
   21,648.24x = 32,486.94 × 8,499.06
4. Step 4: Simplify right side
   21,648.24x = 276,108,452.28
5. Step 5: Solve for x
   x = 276,108,452.28/21,648.24
6. Step 6: Final answer
   x = 12,754.31