Finding the Fourth Proportional to 3,653.31, 5,039.82 and 3,511.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,653.31 : 5,039.82 = 3,511.86 : x
2. Step 2: Convert to fraction form
   3,653.31/5,039.82 = 3,511.86/x
3. Step 3: Cross multiply
   3,653.31x = 5,039.82 × 3,511.86
4. Step 4: Simplify right side
   3,653.31x = 17,699,142.27
5. Step 5: Solve for x
   x = 17,699,142.27/3,653.31
6. Step 6: Final answer
   x = 4,844.69