Finding the Fourth Proportional to 7,712.82, 10,638.54 and 5,353.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,712.82 : 10,638.54 = 5,353.29 : x
2. Step 2: Convert to fraction form
   7,712.82/10,638.54 = 5,353.29/x
3. Step 3: Cross multiply
   7,712.82x = 10,638.54 × 5,353.29
4. Step 4: Simplify right side
   7,712.82x = 56,951,189.80
5. Step 5: Solve for x
   x = 56,951,189.80/7,712.82
6. Step 6: Final answer
   x = 7,383.96