Finding the Fourth Proportional to 13,208.69, 19,826.06 and 8,979

Step by Step Solution

1. Step 1: Write the proportion equation
   13,208.69 : 19,826.06 = 8,979 : x
2. Step 2: Convert to fraction form
   13,208.69/19,826.06 = 8,979/x
3. Step 3: Cross multiply
   13,208.69x = 19,826.06 × 8,979
4. Step 4: Simplify right side
   13,208.69x = 178,018,147.85
5. Step 5: Solve for x
   x = 178,018,147.85/13,208.69
6. Step 6: Final answer
   x = 13,477.36