Finding the Fourth Proportional to 13,016.03, 19,518.57 and 8,858.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,016.03 : 19,518.57 = 8,858.30 : x
2. Step 2: Convert to fraction form
   13,016.03/19,518.57 = 8,858.30/x
3. Step 3: Cross multiply
   13,016.03x = 19,518.57 × 8,858.30
4. Step 4: Simplify right side
   13,016.03x = 172,901,251.04
5. Step 5: Solve for x
   x = 172,901,251.04/13,016.03
6. Step 6: Final answer
   x = 13,283.72