Finding the Fourth Proportional to 13,048.76, 18,007.92 and 8,013.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,048.76 : 18,007.92 = 8,013.20 : x
2. Step 2: Convert to fraction form
   13,048.76/18,007.92 = 8,013.20/x
3. Step 3: Cross multiply
   13,048.76x = 18,007.92 × 8,013.20
4. Step 4: Simplify right side
   13,048.76x = 144,300,974.50
5. Step 5: Solve for x
   x = 144,300,974.50/13,048.76
6. Step 6: Final answer
   x = 11,058.59