Finding the Fourth Proportional to 7,173.86, 10,761.24 and 1,908.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,173.86 : 10,761.24 = 1,908.78 : x
2. Step 2: Convert to fraction form
   7,173.86/10,761.24 = 1,908.78/x
3. Step 3: Cross multiply
   7,173.86x = 10,761.24 × 1,908.78
4. Step 4: Simplify right side
   7,173.86x = 20,540,839.69
5. Step 5: Solve for x
   x = 20,540,839.69/7,173.86
6. Step 6: Final answer
   x = 2,863.29