Finding the Fourth Proportional to 6,118.69, 9,178.71 and 1,957.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,118.69 : 9,178.71 = 1,957.72 : x
2. Step 2: Convert to fraction form
   6,118.69/9,178.71 = 1,957.72/x
3. Step 3: Cross multiply
   6,118.69x = 9,178.71 × 1,957.72
4. Step 4: Simplify right side
   6,118.69x = 17,969,344.14
5. Step 5: Solve for x
   x = 17,969,344.14/6,118.69
6. Step 6: Final answer
   x = 2,936.80