Finding the Fourth Proportional to 8,959.89, 13,411.08 and 4,789.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,959.89 : 13,411.08 = 4,789.47 : x
2. Step 2: Convert to fraction form
   8,959.89/13,411.08 = 4,789.47/x
3. Step 3: Cross multiply
   8,959.89x = 13,411.08 × 4,789.47
4. Step 4: Simplify right side
   8,959.89x = 64,231,965.33
5. Step 5: Solve for x
   x = 64,231,965.33/8,959.89
6. Step 6: Final answer
   x = 7,168.83