Finding the Fourth Proportional to 21,449.95, 29,599.32 and 12,016.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,449.95 : 29,599.32 = 12,016.69 : x
2. Step 2: Convert to fraction form
   21,449.95/29,599.32 = 12,016.69/x
3. Step 3: Cross multiply
   21,449.95x = 29,599.32 × 12,016.69
4. Step 4: Simplify right side
   21,449.95x = 355,685,823.72
5. Step 5: Solve for x
   x = 355,685,823.72/21,449.95
6. Step 6: Final answer
   x = 16,582.13