Finding the Fourth Proportional to 10,721.10, 16,047.09 and 5,519.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.10 : 16,047.09 = 5,519.82 : x
2. Step 2: Convert to fraction form
   10,721.10/16,047.09 = 5,519.82/x
3. Step 3: Cross multiply
   10,721.10x = 16,047.09 × 5,519.82
4. Step 4: Simplify right side
   10,721.10x = 88,577,048.32
5. Step 5: Solve for x
   x = 88,577,048.32/10,721.10
6. Step 6: Final answer
   x = 8,261.94