Finding the Fourth Proportional to 12,454.28, 17,186.22 and 7,738.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,454.28 : 17,186.22 = 7,738.52 : x
2. Step 2: Convert to fraction form
   12,454.28/17,186.22 = 7,738.52/x
3. Step 3: Cross multiply
   12,454.28x = 17,186.22 × 7,738.52
4. Step 4: Simplify right side
   12,454.28x = 132,995,907.19
5. Step 5: Solve for x
   x = 132,995,907.19/12,454.28
6. Step 6: Final answer
   x = 10,678.73