Finding the Fourth Proportional to 7,758.98, 10,707.42 and 4,222.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,758.98 : 10,707.42 = 4,222.18 : x
2. Step 2: Convert to fraction form
   7,758.98/10,707.42 = 4,222.18/x
3. Step 3: Cross multiply
   7,758.98x = 10,707.42 × 4,222.18
4. Step 4: Simplify right side
   7,758.98x = 45,208,654.58
5. Step 5: Solve for x
   x = 45,208,654.58/7,758.98
6. Step 6: Final answer
   x = 5,826.62