Finding the Fourth Proportional to 3,983.69, 5,971.20 and 3,799.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.69 : 5,971.20 = 3,799.70 : x
2. Step 2: Convert to fraction form
   3,983.69/5,971.20 = 3,799.70/x
3. Step 3: Cross multiply
   3,983.69x = 5,971.20 × 3,799.70
4. Step 4: Simplify right side
   3,983.69x = 22,688,768.64
5. Step 5: Solve for x
   x = 22,688,768.64/3,983.69
6. Step 6: Final answer
   x = 5,695.42