Finding the Fourth Proportional to 8,086.08, 12,147.50 and 6,978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,086.08 : 12,147.50 = 6,978.94 : x
2. Step 2: Convert to fraction form
   8,086.08/12,147.50 = 6,978.94/x
3. Step 3: Cross multiply
   8,086.08x = 12,147.50 × 6,978.94
4. Step 4: Simplify right side
   8,086.08x = 84,776,673.65
5. Step 5: Solve for x
   x = 84,776,673.65/8,086.08
6. Step 6: Final answer
   x = 10,484.27