Finding the Fourth Proportional to 3,131.76, 4,698.32 and 2,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.76 : 4,698.32 = 2,672.72 : x
2. Step 2: Convert to fraction form
   3,131.76/4,698.32 = 2,672.72/x
3. Step 3: Cross multiply
   3,131.76x = 4,698.32 × 2,672.72
4. Step 4: Simplify right side
   3,131.76x = 12,557,293.83
5. Step 5: Solve for x
   x = 12,557,293.83/3,131.76
6. Step 6: Final answer
   x = 4,009.66