Finding the Fourth Proportional to 8,977.41, 12,388.82 and 5,200.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,977.41 : 12,388.82 = 5,200.79 : x
2. Step 2: Convert to fraction form
   8,977.41/12,388.82 = 5,200.79/x
3. Step 3: Cross multiply
   8,977.41x = 12,388.82 × 5,200.79
4. Step 4: Simplify right side
   8,977.41x = 64,431,651.17
5. Step 5: Solve for x
   x = 64,431,651.17/8,977.41
6. Step 6: Final answer
   x = 7,177.09