Finding the Fourth Proportional to 6,145.76, 8,479.86 and 3,906.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,145.76 : 8,479.86 = 3,906.82 : x
2. Step 2: Convert to fraction form
   6,145.76/8,479.86 = 3,906.82/x
3. Step 3: Cross multiply
   6,145.76x = 8,479.86 × 3,906.82
4. Step 4: Simplify right side
   6,145.76x = 33,129,286.65
5. Step 5: Solve for x
   x = 33,129,286.65/6,145.76
6. Step 6: Final answer
   x = 5,390.59