Finding the Fourth Proportional to 6,943.90, 10,403.71 and 5,781.37

Step by Step Solution

1. Step 1: Write the proportion equation
   6,943.90 : 10,403.71 = 5,781.37 : x
2. Step 2: Convert to fraction form
   6,943.90/10,403.71 = 5,781.37/x
3. Step 3: Cross multiply
   6,943.90x = 10,403.71 × 5,781.37
4. Step 4: Simplify right side
   6,943.90x = 60,147,696.88
5. Step 5: Solve for x
   x = 60,147,696.88/6,943.90
6. Step 6: Final answer
   x = 8,661.95