Finding the Fourth Proportional to 21,515.25, 29,692.56 and 12,083.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,515.25 : 29,692.56 = 12,083.82 : x
2. Step 2: Convert to fraction form
   21,515.25/29,692.56 = 12,083.82/x
3. Step 3: Cross multiply
   21,515.25x = 29,692.56 × 12,083.82
4. Step 4: Simplify right side
   21,515.25x = 358,799,550.38
5. Step 5: Solve for x
   x = 358,799,550.38/21,515.25
6. Step 6: Final answer
   x = 16,676.52