Finding the Fourth Proportional to 10,724.63, 16,065.05 and 5,519.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,724.63 : 16,065.05 = 5,519.57 : x
2. Step 2: Convert to fraction form
   10,724.63/16,065.05 = 5,519.57/x
3. Step 3: Cross multiply
   10,724.63x = 16,065.05 × 5,519.57
4. Step 4: Simplify right side
   10,724.63x = 88,672,140.43
5. Step 5: Solve for x
   x = 88,672,140.43/10,724.63
6. Step 6: Final answer
   x = 8,268.08