Finding the Fourth Proportional to 13,016.78, 17,963.07 and 7,048.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,016.78 : 17,963.07 = 7,048.31 : x
2. Step 2: Convert to fraction form
   13,016.78/17,963.07 = 7,048.31/x
3. Step 3: Cross multiply
   13,016.78x = 17,963.07 × 7,048.31
4. Step 4: Simplify right side
   13,016.78x = 126,609,250.67
5. Step 5: Solve for x
   x = 126,609,250.67/13,016.78
6. Step 6: Final answer
   x = 9,726.62