Finding the Fourth Proportional to 9,591.21, 14,381.06 and 3,964.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,591.21 : 14,381.06 = 3,964.55 : x
2. Step 2: Convert to fraction form
   9,591.21/14,381.06 = 3,964.55/x
3. Step 3: Cross multiply
   9,591.21x = 14,381.06 × 3,964.55
4. Step 4: Simplify right side
   9,591.21x = 57,014,339.69
5. Step 5: Solve for x
   x = 57,014,339.69/9,591.21
6. Step 6: Final answer
   x = 5,944.44