Finding the Fourth Proportional to 4,789.60, 6,606.42 and 3,019.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,789.60 : 6,606.42 = 3,019.72 : x
2. Step 2: Convert to fraction form
   4,789.60/6,606.42 = 3,019.72/x
3. Step 3: Cross multiply
   4,789.60x = 6,606.42 × 3,019.72
4. Step 4: Simplify right side
   4,789.60x = 19,949,538.60
5. Step 5: Solve for x
   x = 19,949,538.60/4,789.60
6. Step 6: Final answer
   x = 4,165.18