Finding the Fourth Proportional to 9,943.86, 13,722.24 and 5,694.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,943.86 : 13,722.24 = 5,694.78 : x
2. Step 2: Convert to fraction form
   9,943.86/13,722.24 = 5,694.78/x
3. Step 3: Cross multiply
   9,943.86x = 13,722.24 × 5,694.78
4. Step 4: Simplify right side
   9,943.86x = 78,145,137.91
5. Step 5: Solve for x
   x = 78,145,137.91/9,943.86
6. Step 6: Final answer
   x = 7,858.63