Finding the Fourth Proportional to 21,591.24, 29,795.22 and 12,158.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,591.24 : 29,795.22 = 12,158.52 : x
2. Step 2: Convert to fraction form
   21,591.24/29,795.22 = 12,158.52/x
3. Step 3: Cross multiply
   21,591.24x = 29,795.22 × 12,158.52
4. Step 4: Simplify right side
   21,591.24x = 362,265,778.27
5. Step 5: Solve for x
   x = 362,265,778.27/21,591.24
6. Step 6: Final answer
   x = 16,778.37