Finding the Fourth Proportional to 3,992.91, 5,513.72 and 2,503.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992.91 : 5,513.72 = 2,503.37 : x
2. Step 2: Convert to fraction form
   3,992.91/5,513.72 = 2,503.37/x
3. Step 3: Cross multiply
   3,992.91x = 5,513.72 × 2,503.37
4. Step 4: Simplify right side
   3,992.91x = 13,802,841.15
5. Step 5: Solve for x
   x = 13,802,841.15/3,992.91
6. Step 6: Final answer
   x = 3,456.84