Finding the Fourth Proportional to 21,016.76, 29,002.73 and 11,456.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,016.76 : 29,002.73 = 11,456.74 : x
2. Step 2: Convert to fraction form
   21,016.76/29,002.73 = 11,456.74/x
3. Step 3: Cross multiply
   21,016.76x = 29,002.73 × 11,456.74
4. Step 4: Simplify right side
   21,016.76x = 332,276,693.04
5. Step 5: Solve for x
   x = 332,276,693.04/21,016.76
6. Step 6: Final answer
   x = 15,810.08