Finding the Fourth Proportional to 12,947.63, 17,867.72 and 7,358.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.63 : 17,867.72 = 7,358.63 : x
2. Step 2: Convert to fraction form
   12,947.63/17,867.72 = 7,358.63/x
3. Step 3: Cross multiply
   12,947.63x = 17,867.72 × 7,358.63
4. Step 4: Simplify right side
   12,947.63x = 131,481,869.48
5. Step 5: Solve for x
   x = 131,481,869.48/12,947.63
6. Step 6: Final answer
   x = 10,154.90