Finding the Fourth Proportional to 8,368.80, 12,558.69 and 3,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,368.80 : 12,558.69 = 3,174.72 : x
2. Step 2: Convert to fraction form
   8,368.80/12,558.69 = 3,174.72/x
3. Step 3: Cross multiply
   8,368.80x = 12,558.69 × 3,174.72
4. Step 4: Simplify right side
   8,368.80x = 39,870,324.32
5. Step 5: Solve for x
   x = 39,870,324.32/8,368.80
6. Step 6: Final answer
   x = 4,764.16