Finding the Fourth Proportional to 16,411.74, 22,648.31 and 9,338.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,411.74 : 22,648.31 = 9,338.16 : x
2. Step 2: Convert to fraction form
   16,411.74/22,648.31 = 9,338.16/x
3. Step 3: Cross multiply
   16,411.74x = 22,648.31 × 9,338.16
4. Step 4: Simplify right side
   16,411.74x = 211,493,542.51
5. Step 5: Solve for x
   x = 211,493,542.51/16,411.74
6. Step 6: Final answer
   x = 12,886.72