Finding the Fourth Proportional to 6,861.78, 10,292.62 and 1,667.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,861.78 : 10,292.62 = 1,667.62 : x
2. Step 2: Convert to fraction form
   6,861.78/10,292.62 = 1,667.62/x
3. Step 3: Cross multiply
   6,861.78x = 10,292.62 × 1,667.62
4. Step 4: Simplify right side
   6,861.78x = 17,164,178.96
5. Step 5: Solve for x
   x = 17,164,178.96/6,861.78
6. Step 6: Final answer
   x = 2,501.42