Finding the Fourth Proportional to 8,958.01, 12,361.79 and 5,129.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.01 : 12,361.79 = 5,129.52 : x
2. Step 2: Convert to fraction form
   8,958.01/12,361.79 = 5,129.52/x
3. Step 3: Cross multiply
   8,958.01x = 12,361.79 × 5,129.52
4. Step 4: Simplify right side
   8,958.01x = 63,410,049.04
5. Step 5: Solve for x
   x = 63,410,049.04/8,958.01
6. Step 6: Final answer
   x = 7,078.59