Finding the Fourth Proportional to 3,947.31, 5,892.03 and 3,480.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.31 : 5,892.03 = 3,480.24 : x
2. Step 2: Convert to fraction form
   3,947.31/5,892.03 = 3,480.24/x
3. Step 3: Cross multiply
   3,947.31x = 5,892.03 × 3,480.24
4. Step 4: Simplify right side
   3,947.31x = 20,505,678.49
5. Step 5: Solve for x
   x = 20,505,678.49/3,947.31
6. Step 6: Final answer
   x = 5,194.85