Finding the Fourth Proportional to 7,123.74, 9,830.75 and 4,292.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.74 : 9,830.75 = 4,292.75 : x
2. Step 2: Convert to fraction form
   7,123.74/9,830.75 = 4,292.75/x
3. Step 3: Cross multiply
   7,123.74x = 9,830.75 × 4,292.75
4. Step 4: Simplify right side
   7,123.74x = 42,200,952.06
5. Step 5: Solve for x
   x = 42,200,952.06/7,123.74
6. Step 6: Final answer
   x = 5,923.99