Finding the Fourth Proportional to 12,523.72, 17,315.97 and 10,947.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,523.72 : 17,315.97 = 10,947.29 : x
2. Step 2: Convert to fraction form
   12,523.72/17,315.97 = 10,947.29/x
3. Step 3: Cross multiply
   12,523.72x = 17,315.97 × 10,947.29
4. Step 4: Simplify right side
   12,523.72x = 189,562,947.46
5. Step 5: Solve for x
   x = 189,562,947.46/12,523.72
6. Step 6: Final answer
   x = 15,136.31