Finding the Fourth Proportional to 7,075.89, 9,764.35 and 3,931.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,075.89 : 9,764.35 = 3,931.88 : x
2. Step 2: Convert to fraction form
   7,075.89/9,764.35 = 3,931.88/x
3. Step 3: Cross multiply
   7,075.89x = 9,764.35 × 3,931.88
4. Step 4: Simplify right side
   7,075.89x = 38,392,193.83
5. Step 5: Solve for x
   x = 38,392,193.83/7,075.89
6. Step 6: Final answer
   x = 5,425.78