Finding the Fourth Proportional to 10,661.82, 15,997.34 and 5,725.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,661.82 : 15,997.34 = 5,725.70 : x
2. Step 2: Convert to fraction form
   10,661.82/15,997.34 = 5,725.70/x
3. Step 3: Cross multiply
   10,661.82x = 15,997.34 × 5,725.70
4. Step 4: Simplify right side
   10,661.82x = 91,595,861.02
5. Step 5: Solve for x
   x = 91,595,861.02/10,661.82
6. Step 6: Final answer
   x = 8,591.02