Finding the Fourth Proportional to 12,280.92, 16,947.90 and 7,315.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.92 : 16,947.90 = 7,315.80 : x
2. Step 2: Convert to fraction form
   12,280.92/16,947.90 = 7,315.80/x
3. Step 3: Cross multiply
   12,280.92x = 16,947.90 × 7,315.80
4. Step 4: Simplify right side
   12,280.92x = 123,987,446.82
5. Step 5: Solve for x
   x = 123,987,446.82/12,280.92
6. Step 6: Final answer
   x = 10,095.94