Finding the Fourth Proportional to 12,698.54, 17,520.02 and 7,392.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698.54 : 17,520.02 = 7,392.38 : x
2. Step 2: Convert to fraction form
   12,698.54/17,520.02 = 7,392.38/x
3. Step 3: Cross multiply
   12,698.54x = 17,520.02 × 7,392.38
4. Step 4: Simplify right side
   12,698.54x = 129,514,645.45
5. Step 5: Solve for x
   x = 129,514,645.45/12,698.54
6. Step 6: Final answer
   x = 10,199.18