Finding the Fourth Proportional to 10,570.82, 15,836.65 and 5,299.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,570.82 : 15,836.65 = 5,299.67 : x
2. Step 2: Convert to fraction form
   10,570.82/15,836.65 = 5,299.67/x
3. Step 3: Cross multiply
   10,570.82x = 15,836.65 × 5,299.67
4. Step 4: Simplify right side
   10,570.82x = 83,929,045.25
5. Step 5: Solve for x
   x = 83,929,045.25/10,570.82
6. Step 6: Final answer
   x = 7,939.69