Finding the Fourth Proportional to 7,758.71, 10,707.24 and 4,222.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,758.71 : 10,707.24 = 4,222.15 : x
2. Step 2: Convert to fraction form
   7,758.71/10,707.24 = 4,222.15/x
3. Step 3: Cross multiply
   7,758.71x = 10,707.24 × 4,222.15
4. Step 4: Simplify right side
   7,758.71x = 45,207,562.43
5. Step 5: Solve for x
   x = 45,207,562.43/7,758.71
6. Step 6: Final answer
   x = 5,826.69