Finding the Fourth Proportional to 3,892.36, 5,813.71 and 3,521.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.36 : 5,813.71 = 3,521.59 : x
2. Step 2: Convert to fraction form
   3,892.36/5,813.71 = 3,521.59/x
3. Step 3: Cross multiply
   3,892.36x = 5,813.71 × 3,521.59
4. Step 4: Simplify right side
   3,892.36x = 20,473,503.00
5. Step 5: Solve for x
   x = 20,473,503.00/3,892.36
6. Step 6: Final answer
   x = 5,259.92