Finding the Fourth Proportional to 21,067.08, 31,577.94 and 11,196.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,067.08 : 31,577.94 = 11,196.42 : x
2. Step 2: Convert to fraction form
   21,067.08/31,577.94 = 11,196.42/x
3. Step 3: Cross multiply
   21,067.08x = 31,577.94 × 11,196.42
4. Step 4: Simplify right side
   21,067.08x = 353,559,878.97
5. Step 5: Solve for x
   x = 353,559,878.97/21,067.08
6. Step 6: Final answer
   x = 16,782.58