Finding the Fourth Proportional to 3,892.15, 5,823.61 and 3,681.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.15 : 5,823.61 = 3,681.15 : x
2. Step 2: Convert to fraction form
   3,892.15/5,823.61 = 3,681.15/x
3. Step 3: Cross multiply
   3,892.15x = 5,823.61 × 3,681.15
4. Step 4: Simplify right side
   3,892.15x = 21,437,550.91
5. Step 5: Solve for x
   x = 21,437,550.91/3,892.15
6. Step 6: Final answer
   x = 5,507.89