Finding the Fourth Proportional to 8,955.96, 12,359.16 and 5,179.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,955.96 : 12,359.16 = 5,179.08 : x
2. Step 2: Convert to fraction form
   8,955.96/12,359.16 = 5,179.08/x
3. Step 3: Cross multiply
   8,955.96x = 12,359.16 × 5,179.08
4. Step 4: Simplify right side
   8,955.96x = 64,009,078.37
5. Step 5: Solve for x
   x = 64,009,078.37/8,955.96
6. Step 6: Final answer
   x = 7,147.09