Finding the Fourth Proportional to 21,423.09, 32,131.45 and 8,273.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,423.09 : 32,131.45 = 8,273.82 : x
2. Step 2: Convert to fraction form
   21,423.09/32,131.45 = 8,273.82/x
3. Step 3: Cross multiply
   21,423.09x = 32,131.45 × 8,273.82
4. Step 4: Simplify right side
   21,423.09x = 265,849,833.64
5. Step 5: Solve for x
   x = 265,849,833.64/21,423.09
6. Step 6: Final answer
   x = 12,409.50