Finding the Fourth Proportional to 5,306.72, 7,955.82 and 2,672.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,306.72 : 7,955.82 = 2,672.78 : x
2. Step 2: Convert to fraction form
   5,306.72/7,955.82 = 2,672.78/x
3. Step 3: Cross multiply
   5,306.72x = 7,955.82 × 2,672.78
4. Step 4: Simplify right side
   5,306.72x = 21,264,156.58
5. Step 5: Solve for x
   x = 21,264,156.58/5,306.72
6. Step 6: Final answer
   x = 4,007.02