Finding the Fourth Proportional to 21,592.99, 29,798.72 and 12,161.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,592.99 : 29,798.72 = 12,161.89 : x
2. Step 2: Convert to fraction form
   21,592.99/29,798.72 = 12,161.89/x
3. Step 3: Cross multiply
   21,592.99x = 29,798.72 × 12,161.89
4. Step 4: Simplify right side
   21,592.99x = 362,408,754.78
5. Step 5: Solve for x
   x = 362,408,754.78/21,592.99
6. Step 6: Final answer
   x = 16,783.63