Finding the Fourth Proportional to 8,735.94, 12,057.93 and 5,379.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,735.94 : 12,057.93 = 5,379.30 : x
2. Step 2: Convert to fraction form
   8,735.94/12,057.93 = 5,379.30/x
3. Step 3: Cross multiply
   8,735.94x = 12,057.93 × 5,379.30
4. Step 4: Simplify right side
   8,735.94x = 64,863,222.85
5. Step 5: Solve for x
   x = 64,863,222.85/8,735.94
6. Step 6: Final answer
   x = 7,424.87