Finding the Fourth Proportional to 21,548.72, 29,740.06 and 12,119.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,548.72 : 29,740.06 = 12,119.10 : x
2. Step 2: Convert to fraction form
   21,548.72/29,740.06 = 12,119.10/x
3. Step 3: Cross multiply
   21,548.72x = 29,740.06 × 12,119.10
4. Step 4: Simplify right side
   21,548.72x = 360,422,761.15
5. Step 5: Solve for x
   x = 360,422,761.15/21,548.72
6. Step 6: Final answer
   x = 16,725.95