Finding the Fourth Proportional to 3,655.31, 5,042.58 and 3,513.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655.31 : 5,042.58 = 3,513.86 : x
2. Step 2: Convert to fraction form
   3,655.31/5,042.58 = 3,513.86/x
3. Step 3: Cross multiply
   3,655.31x = 5,042.58 × 3,513.86
4. Step 4: Simplify right side
   3,655.31x = 17,718,920.16
5. Step 5: Solve for x
   x = 17,718,920.16/3,655.31
6. Step 6: Final answer
   x = 4,847.45