Finding the Fourth Proportional to 21,386.29, 29,513.27 and 11,826.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,386.29 : 29,513.27 = 11,826.82 : x
2. Step 2: Convert to fraction form
   21,386.29/29,513.27 = 11,826.82/x
3. Step 3: Cross multiply
   21,386.29x = 29,513.27 × 11,826.82
4. Step 4: Simplify right side
   21,386.29x = 349,048,192.27
5. Step 5: Solve for x
   x = 349,048,192.27/21,386.29
6. Step 6: Final answer
   x = 16,321.12