Finding the Fourth Proportional to 3,980.63, 5,970.17 and 3,783.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.63 : 5,970.17 = 3,783.07 : x
2. Step 2: Convert to fraction form
   3,980.63/5,970.17 = 3,783.07/x
3. Step 3: Cross multiply
   3,980.63x = 5,970.17 × 3,783.07
4. Step 4: Simplify right side
   3,980.63x = 22,585,587.94
5. Step 5: Solve for x
   x = 22,585,587.94/3,980.63
6. Step 6: Final answer
   x = 5,673.87