Finding the Fourth Proportional to 21,032.34, 29,020.59 and 12,649.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,032.34 : 29,020.59 = 12,649.38 : x
2. Step 2: Convert to fraction form
   21,032.34/29,020.59 = 12,649.38/x
3. Step 3: Cross multiply
   21,032.34x = 29,020.59 × 12,649.38
4. Step 4: Simplify right side
   21,032.34x = 367,092,470.73
5. Step 5: Solve for x
   x = 367,092,470.73/21,032.34
6. Step 6: Final answer
   x = 17,453.72