Finding the Fourth Proportional to 5,698.47, 7,863.18 and 3,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,698.47 : 7,863.18 = 3,180.72 : x
2. Step 2: Convert to fraction form
   5,698.47/7,863.18 = 3,180.72/x
3. Step 3: Cross multiply
   5,698.47x = 7,863.18 × 3,180.72
4. Step 4: Simplify right side
   5,698.47x = 25,010,554.23
5. Step 5: Solve for x
   x = 25,010,554.23/5,698.47
6. Step 6: Final answer
   x = 4,389.00