Finding the Fourth Proportional to 3,712.53, 5,590.83 and 3,231.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,712.53 : 5,590.83 = 3,231.39 : x
2. Step 2: Convert to fraction form
   3,712.53/5,590.83 = 3,231.39/x
3. Step 3: Cross multiply
   3,712.53x = 5,590.83 × 3,231.39
4. Step 4: Simplify right side
   3,712.53x = 18,066,152.15
5. Step 5: Solve for x
   x = 18,066,152.15/3,712.53
6. Step 6: Final answer
   x = 4,866.26