Finding the Fourth Proportional to 21,105.94, 29,125.22 and 12,151.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,105.94 : 29,125.22 = 12,151.52 : x
2. Step 2: Convert to fraction form
   21,105.94/29,125.22 = 12,151.52/x
3. Step 3: Cross multiply
   21,105.94x = 29,125.22 × 12,151.52
4. Step 4: Simplify right side
   21,105.94x = 353,915,693.33
5. Step 5: Solve for x
   x = 353,915,693.33/21,105.94
6. Step 6: Final answer
   x = 16,768.53