Finding the Fourth Proportional to 4,945.99, 6,825.81 and 3,178.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,945.99 : 6,825.81 = 3,178.15 : x
2. Step 2: Convert to fraction form
   4,945.99/6,825.81 = 3,178.15/x
3. Step 3: Cross multiply
   4,945.99x = 6,825.81 × 3,178.15
4. Step 4: Simplify right side
   4,945.99x = 21,693,448.05
5. Step 5: Solve for x
   x = 21,693,448.05/4,945.99
6. Step 6: Final answer
   x = 4,386.07