Finding the Fourth Proportional to 7,759.91, 10,708.71 and 4,223.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,759.91 : 10,708.71 = 4,223.12 : x
2. Step 2: Convert to fraction form
   7,759.91/10,708.71 = 4,223.12/x
3. Step 3: Cross multiply
   7,759.91x = 10,708.71 × 4,223.12
4. Step 4: Simplify right side
   7,759.91x = 45,224,167.38
5. Step 5: Solve for x
   x = 45,224,167.38/7,759.91
6. Step 6: Final answer
   x = 5,827.92