Finding the Fourth Proportional to 21,574.52, 29,774.62 and 12,016.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,574.52 : 29,774.62 = 12,016.24 : x
2. Step 2: Convert to fraction form
   21,574.52/29,774.62 = 12,016.24/x
3. Step 3: Cross multiply
   21,574.52x = 29,774.62 × 12,016.24
4. Step 4: Simplify right side
   21,574.52x = 357,778,979.83
5. Step 5: Solve for x
   x = 357,778,979.83/21,574.52
6. Step 6: Final answer
   x = 16,583.40