Finding the Fourth Proportional to 7,272.82, 10,913.87 and 3,112.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,272.82 : 10,913.87 = 3,112.89 : x
2. Step 2: Convert to fraction form
   7,272.82/10,913.87 = 3,112.89/x
3. Step 3: Cross multiply
   7,272.82x = 10,913.87 × 3,112.89
4. Step 4: Simplify right side
   7,272.82x = 33,973,676.78
5. Step 5: Solve for x
   x = 33,973,676.78/7,272.82
6. Step 6: Final answer
   x = 4,671.32