Finding the Fourth Proportional to 3,919.56, 5,900.72 and 3,575.11

Step by Step Solution

1. Step 1: Write the proportion equation
   3,919.56 : 5,900.72 = 3,575.11 : x
2. Step 2: Convert to fraction form
   3,919.56/5,900.72 = 3,575.11/x
3. Step 3: Cross multiply
   3,919.56x = 5,900.72 × 3,575.11
4. Step 4: Simplify right side
   3,919.56x = 21,095,723.08
5. Step 5: Solve for x
   x = 21,095,723.08/3,919.56
6. Step 6: Final answer
   x = 5,382.17