Finding the Fourth Proportional to 8,751.34, 12,078.87 and 5,767.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,751.34 : 12,078.87 = 5,767.70 : x
2. Step 2: Convert to fraction form
   8,751.34/12,078.87 = 5,767.70/x
3. Step 3: Cross multiply
   8,751.34x = 12,078.87 × 5,767.70
4. Step 4: Simplify right side
   8,751.34x = 69,667,298.50
5. Step 5: Solve for x
   x = 69,667,298.50/8,751.34
6. Step 6: Final answer
   x = 7,960.76