Finding the Fourth Proportional to 21,498.12, 29,667.42 and 12,068.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,498.12 : 29,667.42 = 12,068.28 : x
2. Step 2: Convert to fraction form
   21,498.12/29,667.42 = 12,068.28/x
3. Step 3: Cross multiply
   21,498.12x = 29,667.42 × 12,068.28
4. Step 4: Simplify right side
   21,498.12x = 358,034,731.44
5. Step 5: Solve for x
   x = 358,034,731.44/21,498.12
6. Step 6: Final answer
   x = 16,654.23