Finding the Fourth Proportional to 21,499.06, 29,670.02 and 12,067.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.06 : 29,670.02 = 12,067.63 : x
2. Step 2: Convert to fraction form
   21,499.06/29,670.02 = 12,067.63/x
3. Step 3: Cross multiply
   21,499.06x = 29,670.02 × 12,067.63
4. Step 4: Simplify right side
   21,499.06x = 358,046,823.45
5. Step 5: Solve for x
   x = 358,046,823.45/21,499.06
6. Step 6: Final answer
   x = 16,654.07