Finding the Fourth Proportional to 7,665.78, 11,499.58 and 2,736.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,665.78 : 11,499.58 = 2,736.12 : x
2. Step 2: Convert to fraction form
   7,665.78/11,499.58 = 2,736.12/x
3. Step 3: Cross multiply
   7,665.78x = 11,499.58 × 2,736.12
4. Step 4: Simplify right side
   7,665.78x = 31,464,230.83
5. Step 5: Solve for x
   x = 31,464,230.83/7,665.78
6. Step 6: Final answer
   x = 4,104.50