Finding the Fourth Proportional to 6,899.86, 9,521.85 and 3,756.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,899.86 : 9,521.85 = 3,756.05 : x
2. Step 2: Convert to fraction form
   6,899.86/9,521.85 = 3,756.05/x
3. Step 3: Cross multiply
   6,899.86x = 9,521.85 × 3,756.05
4. Step 4: Simplify right side
   6,899.86x = 35,764,544.69
5. Step 5: Solve for x
   x = 35,764,544.69/6,899.86
6. Step 6: Final answer
   x = 5,183.37