Finding the Fourth Proportional to 21,659.48, 32,491.68 and 8,510.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,659.48 : 32,491.68 = 8,510.12 : x
2. Step 2: Convert to fraction form
   21,659.48/32,491.68 = 8,510.12/x
3. Step 3: Cross multiply
   21,659.48x = 32,491.68 × 8,510.12
4. Step 4: Simplify right side
   21,659.48x = 276,508,095.80
5. Step 5: Solve for x
   x = 276,508,095.80/21,659.48
6. Step 6: Final answer
   x = 12,766.15