Finding the Fourth Proportional to 12,282.59, 16,950.43 and 6,978.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,282.59 : 16,950.43 = 6,978.31 : x
2. Step 2: Convert to fraction form
   12,282.59/16,950.43 = 6,978.31/x
3. Step 3: Cross multiply
   12,282.59x = 16,950.43 × 6,978.31
4. Step 4: Simplify right side
   12,282.59x = 118,285,321.52
5. Step 5: Solve for x
   x = 118,285,321.52/12,282.59
6. Step 6: Final answer
   x = 9,630.32