Finding the Fourth Proportional to 8,890.48, 12,264.78 and 5,747.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.48 : 12,264.78 = 5,747.68 : x
2. Step 2: Convert to fraction form
   8,890.48/12,264.78 = 5,747.68/x
3. Step 3: Cross multiply
   8,890.48x = 12,264.78 × 5,747.68
4. Step 4: Simplify right side
   8,890.48x = 70,494,030.71
5. Step 5: Solve for x
   x = 70,494,030.71/8,890.48
6. Step 6: Final answer
   x = 7,929.16