Finding the Fourth Proportional to 21,613.69, 29,826.39 and 12,182.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613.69 : 29,826.39 = 12,182.32 : x
2. Step 2: Convert to fraction form
   21,613.69/29,826.39 = 12,182.32/x
3. Step 3: Cross multiply
   21,613.69x = 29,826.39 × 12,182.32
4. Step 4: Simplify right side
   21,613.69x = 363,354,627.42
5. Step 5: Solve for x
   x = 363,354,627.42/21,613.69
6. Step 6: Final answer
   x = 16,811.32