Finding the Fourth Proportional to 4,772.82, 7,118.54 and 4,689.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,772.82 : 7,118.54 = 4,689.72 : x
2. Step 2: Convert to fraction form
   4,772.82/7,118.54 = 4,689.72/x
3. Step 3: Cross multiply
   4,772.82x = 7,118.54 × 4,689.72
4. Step 4: Simplify right side
   4,772.82x = 33,383,959.41
5. Step 5: Solve for x
   x = 33,383,959.41/4,772.82
6. Step 6: Final answer
   x = 6,994.60