Finding the Fourth Proportional to 7,075.42, 9,764.37 and 3,931.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,075.42 : 9,764.37 = 3,931.61 : x
2. Step 2: Convert to fraction form
   7,075.42/9,764.37 = 3,931.61/x
3. Step 3: Cross multiply
   7,075.42x = 9,764.37 × 3,931.61
4. Step 4: Simplify right side
   7,075.42x = 38,389,645.91
5. Step 5: Solve for x
   x = 38,389,645.91/7,075.42
6. Step 6: Final answer
   x = 5,425.78