Finding the Fourth Proportional to 3,900.56, 5,844.12 and 2,803.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.56 : 5,844.12 = 2,803.28 : x
2. Step 2: Convert to fraction form
   3,900.56/5,844.12 = 2,803.28/x
3. Step 3: Cross multiply
   3,900.56x = 5,844.12 × 2,803.28
4. Step 4: Simplify right side
   3,900.56x = 16,382,704.71
5. Step 5: Solve for x
   x = 16,382,704.71/3,900.56
6. Step 6: Final answer
   x = 4,200.09