Finding the Fourth Proportional to 21,131.82, 29,162.22 and 11,700.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.82 : 29,162.22 = 11,700.36 : x
2. Step 2: Convert to fraction form
   21,131.82/29,162.22 = 11,700.36/x
3. Step 3: Cross multiply
   21,131.82x = 29,162.22 × 11,700.36
4. Step 4: Simplify right side
   21,131.82x = 341,208,472.40
5. Step 5: Solve for x
   x = 341,208,472.40/21,131.82
6. Step 6: Final answer
   x = 16,146.67