Finding the Fourth Proportional to 8,976.84, 12,387.83 and 5,200.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.84 : 12,387.83 = 5,200.19 : x
2. Step 2: Convert to fraction form
   8,976.84/12,387.83 = 5,200.19/x
3. Step 3: Cross multiply
   8,976.84x = 12,387.83 × 5,200.19
4. Step 4: Simplify right side
   8,976.84x = 64,419,069.69
5. Step 5: Solve for x
   x = 64,419,069.69/8,976.84
6. Step 6: Final answer
   x = 7,176.14