Finding the Fourth Proportional to 21,969.38, 30,317.69 and 11,897.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,969.38 : 30,317.69 = 11,897.82 : x
2. Step 2: Convert to fraction form
   21,969.38/30,317.69 = 11,897.82/x
3. Step 3: Cross multiply
   21,969.38x = 30,317.69 × 11,897.82
4. Step 4: Simplify right side
   21,969.38x = 360,714,358.95
5. Step 5: Solve for x
   x = 360,714,358.95/21,969.38
6. Step 6: Final answer
   x = 16,418.96