Finding the Fourth Proportional to 5,178.58, 7,147.04 and 3,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178.58 : 7,147.04 = 3,082.72 : x
2. Step 2: Convert to fraction form
   5,178.58/7,147.04 = 3,082.72/x
3. Step 3: Cross multiply
   5,178.58x = 7,147.04 × 3,082.72
4. Step 4: Simplify right side
   5,178.58x = 22,032,323.15
5. Step 5: Solve for x
   x = 22,032,323.15/5,178.58
6. Step 6: Final answer
   x = 4,254.51