Finding the Fourth Proportional to 3,691.89, 5,514.30 and 3,339.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,691.89 : 5,514.30 = 3,339.96 : x
2. Step 2: Convert to fraction form
   3,691.89/5,514.30 = 3,339.96/x
3. Step 3: Cross multiply
   3,691.89x = 5,514.30 × 3,339.96
4. Step 4: Simplify right side
   3,691.89x = 18,417,541.43
5. Step 5: Solve for x
   x = 18,417,541.43/3,691.89
6. Step 6: Final answer
   x = 4,988.65