Finding the Fourth Proportional to 21,498.54, 29,672.19 and 12,066.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,498.54 : 29,672.19 = 12,066.54 : x
2. Step 2: Convert to fraction form
   21,498.54/29,672.19 = 12,066.54/x
3. Step 3: Cross multiply
   21,498.54x = 29,672.19 × 12,066.54
4. Step 4: Simplify right side
   21,498.54x = 358,040,667.52
5. Step 5: Solve for x
   x = 358,040,667.52/21,498.54
6. Step 6: Final answer
   x = 16,654.19