Finding the Fourth Proportional to 3,783.84, 5,687.91 and 3,513.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.84 : 5,687.91 = 3,513.30 : x
2. Step 2: Convert to fraction form
   3,783.84/5,687.91 = 3,513.30/x
3. Step 3: Cross multiply
   3,783.84x = 5,687.91 × 3,513.30
4. Step 4: Simplify right side
   3,783.84x = 19,983,334.20
5. Step 5: Solve for x
   x = 19,983,334.20/3,783.84
6. Step 6: Final answer
   x = 5,281.23