Finding the Fourth Proportional to 12,947.36, 17,865.28 and 7,282.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.36 : 17,865.28 = 7,282.09 : x
2. Step 2: Convert to fraction form
   12,947.36/17,865.28 = 7,282.09/x
3. Step 3: Cross multiply
   12,947.36x = 17,865.28 × 7,282.09
4. Step 4: Simplify right side
   12,947.36x = 130,096,451.10
5. Step 5: Solve for x
   x = 130,096,451.10/12,947.36
6. Step 6: Final answer
   x = 10,048.11