Finding the Fourth Proportional to 21,555.82, 29,746.72 and 12,124.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,555.82 : 29,746.72 = 12,124.38 : x
2. Step 2: Convert to fraction form
   21,555.82/29,746.72 = 12,124.38/x
3. Step 3: Cross multiply
   21,555.82x = 29,746.72 × 12,124.38
4. Step 4: Simplify right side
   21,555.82x = 360,660,537.03
5. Step 5: Solve for x
   x = 360,660,537.03/21,555.82
6. Step 6: Final answer
   x = 16,731.47