Finding the Fourth Proportional to 6,870.86, 9,481.81 and 3,727.07

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.86 : 9,481.81 = 3,727.07 : x
2. Step 2: Convert to fraction form
   6,870.86/9,481.81 = 3,727.07/x
3. Step 3: Cross multiply
   6,870.86x = 9,481.81 × 3,727.07
4. Step 4: Simplify right side
   6,870.86x = 35,339,312.87
5. Step 5: Solve for x
   x = 35,339,312.87/6,870.86
6. Step 6: Final answer
   x = 5,143.36