Finding the Fourth Proportional to 8,974.83, 12,384.35 and 5,199.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.83 : 12,384.35 = 5,199.22 : x
2. Step 2: Convert to fraction form
   8,974.83/12,384.35 = 5,199.22/x
3. Step 3: Cross multiply
   8,974.83x = 12,384.35 × 5,199.22
4. Step 4: Simplify right side
   8,974.83x = 64,388,960.21
5. Step 5: Solve for x
   x = 64,388,960.21/8,974.83
6. Step 6: Final answer
   x = 7,174.39