Finding the Fourth Proportional to 4,780.28, 7,171.94 and 3,036.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,780.28 : 7,171.94 = 3,036.15 : x
2. Step 2: Convert to fraction form
   4,780.28/7,171.94 = 3,036.15/x
3. Step 3: Cross multiply
   4,780.28x = 7,171.94 × 3,036.15
4. Step 4: Simplify right side
   4,780.28x = 21,775,070.45
5. Step 5: Solve for x
   x = 21,775,070.45/4,780.28
6. Step 6: Final answer
   x = 4,555.19