Finding the Fourth Proportional to 21,162.05, 31,738.51 and 8,669.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.05 : 31,738.51 = 8,669.82 : x
2. Step 2: Convert to fraction form
   21,162.05/31,738.51 = 8,669.82/x
3. Step 3: Cross multiply
   21,162.05x = 31,738.51 × 8,669.82
4. Step 4: Simplify right side
   21,162.05x = 275,167,168.77
5. Step 5: Solve for x
   x = 275,167,168.77/21,162.05
6. Step 6: Final answer
   x = 13,002.86