Finding the Fourth Proportional to 8,856.14, 12,220.88 and 5,784.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,856.14 : 12,220.88 = 5,784.89 : x
2. Step 2: Convert to fraction form
   8,856.14/12,220.88 = 5,784.89/x
3. Step 3: Cross multiply
   8,856.14x = 12,220.88 × 5,784.89
4. Step 4: Simplify right side
   8,856.14x = 70,696,356.47
5. Step 5: Solve for x
   x = 70,696,356.47/8,856.14
6. Step 6: Final answer
   x = 7,982.76