Finding the Fourth Proportional to 21,499.04, 29,672.88 and 12,067.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.04 : 29,672.88 = 12,067.04 : x
2. Step 2: Convert to fraction form
   21,499.04/29,672.88 = 12,067.04/x
3. Step 3: Cross multiply
   21,499.04x = 29,672.88 × 12,067.04
4. Step 4: Simplify right side
   21,499.04x = 358,063,829.88
5. Step 5: Solve for x
   x = 358,063,829.88/21,499.04
6. Step 6: Final answer
   x = 16,654.88