Finding the Fourth Proportional to 3,980.31, 5,941.28 and 3,513.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.31 : 5,941.28 = 3,513.29 : x
2. Step 2: Convert to fraction form
   3,980.31/5,941.28 = 3,513.29/x
3. Step 3: Cross multiply
   3,980.31x = 5,941.28 × 3,513.29
4. Step 4: Simplify right side
   3,980.31x = 20,873,392.34
5. Step 5: Solve for x
   x = 20,873,392.34/3,980.31
6. Step 6: Final answer
   x = 5,244.16