Finding the Fourth Proportional to 8,976.96, 12,388.01 and 5,200.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.96 : 12,388.01 = 5,200.30 : x
2. Step 2: Convert to fraction form
   8,976.96/12,388.01 = 5,200.30/x
3. Step 3: Cross multiply
   8,976.96x = 12,388.01 × 5,200.30
4. Step 4: Simplify right side
   8,976.96x = 64,421,357.89
5. Step 5: Solve for x
   x = 64,421,357.89/8,976.96
6. Step 6: Final answer
   x = 7,176.30