Finding the Fourth Proportional to 3,892.30, 5,370.37 and 2,635.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.30 : 5,370.37 = 2,635.72 : x
2. Step 2: Convert to fraction form
   3,892.30/5,370.37 = 2,635.72/x
3. Step 3: Cross multiply
   3,892.30x = 5,370.37 × 2,635.72
4. Step 4: Simplify right side
   3,892.30x = 14,154,791.62
5. Step 5: Solve for x
   x = 14,154,791.62/3,892.30
6. Step 6: Final answer
   x = 3,636.61