Finding the Fourth Proportional to 8,769.54, 13,139.46 and 5,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,769.54 : 13,139.46 = 5,299.50 : x
2. Step 2: Convert to fraction form
   8,769.54/13,139.46 = 5,299.50/x
3. Step 3: Cross multiply
   8,769.54x = 13,139.46 × 5,299.50
4. Step 4: Simplify right side
   8,769.54x = 69,632,568.27
5. Step 5: Solve for x
   x = 69,632,568.27/8,769.54
6. Step 6: Final answer
   x = 7,940.28