Finding the Fourth Proportional to 21,574.84, 29,766.32 and 12,141.58

Step by Step Solution

1. Step 1: Write the proportion equation
   21,574.84 : 29,766.32 = 12,141.58 : x
2. Step 2: Convert to fraction form
   21,574.84/29,766.32 = 12,141.58/x
3. Step 3: Cross multiply
   21,574.84x = 29,766.32 × 12,141.58
4. Step 4: Simplify right side
   21,574.84x = 361,410,155.59
5. Step 5: Solve for x
   x = 361,410,155.59/21,574.84
6. Step 6: Final answer
   x = 16,751.46