Finding the Fourth Proportional to 8,667.12, 11,960.13 and 4,890.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.12 : 11,960.13 = 4,890.06 : x
2. Step 2: Convert to fraction form
   8,667.12/11,960.13 = 4,890.06/x
3. Step 3: Cross multiply
   8,667.12x = 11,960.13 × 4,890.06
4. Step 4: Simplify right side
   8,667.12x = 58,485,753.31
5. Step 5: Solve for x
   x = 58,485,753.31/8,667.12
6. Step 6: Final answer
   x = 6,748.00