Finding the Fourth Proportional to 21,133.37, 29,166.82 and 12,061.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,133.37 : 29,166.82 = 12,061.91 : x
2. Step 2: Convert to fraction form
   21,133.37/29,166.82 = 12,061.91/x
3. Step 3: Cross multiply
   21,133.37x = 29,166.82 × 12,061.91
4. Step 4: Simplify right side
   21,133.37x = 351,807,600.59
5. Step 5: Solve for x
   x = 351,807,600.59/21,133.37
6. Step 6: Final answer
   x = 16,647.02