Finding the Fourth Proportional to 7,321.32, 10,103.35 and 3,964.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.32 : 10,103.35 = 3,964.05 : x
2. Step 2: Convert to fraction form
   7,321.32/10,103.35 = 3,964.05/x
3. Step 3: Cross multiply
   7,321.32x = 10,103.35 × 3,964.05
4. Step 4: Simplify right side
   7,321.32x = 40,050,184.57
5. Step 5: Solve for x
   x = 40,050,184.57/7,321.32
6. Step 6: Final answer
   x = 5,470.35