Finding the Fourth Proportional to 3,892.20, 5,369.86 and 2,495.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.20 : 5,369.86 = 2,495.72 : x
2. Step 2: Convert to fraction form
   3,892.20/5,369.86 = 2,495.72/x
3. Step 3: Cross multiply
   3,892.20x = 5,369.86 × 2,495.72
4. Step 4: Simplify right side
   3,892.20x = 13,401,667.00
5. Step 5: Solve for x
   x = 13,401,667.00/3,892.20
6. Step 6: Final answer
   x = 3,443.21