Finding the Fourth Proportional to 7,719.28, 10,673.31 and 7,364.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,719.28 : 10,673.31 = 7,364.50 : x
2. Step 2: Convert to fraction form
   7,719.28/10,673.31 = 7,364.50/x
3. Step 3: Cross multiply
   7,719.28x = 10,673.31 × 7,364.50
4. Step 4: Simplify right side
   7,719.28x = 78,603,591.50
5. Step 5: Solve for x
   x = 78,603,591.50/7,719.28
6. Step 6: Final answer
   x = 10,182.76