Finding the Fourth Proportional to 7,892.82, 10,912.86 and 7,768.08

Step by Step Solution

1. Step 1: Write the proportion equation
   7,892.82 : 10,912.86 = 7,768.08 : x
2. Step 2: Convert to fraction form
   7,892.82/10,912.86 = 7,768.08/x
3. Step 3: Cross multiply
   7,892.82x = 10,912.86 × 7,768.08
4. Step 4: Simplify right side
   7,892.82x = 84,771,969.51
5. Step 5: Solve for x
   x = 84,771,969.51/7,892.82
6. Step 6: Final answer
   x = 10,740.39