Finding the Fourth Proportional to 12,384.42, 18,583.83 and 4,989.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.42 : 18,583.83 = 4,989.54 : x
2. Step 2: Convert to fraction form
   12,384.42/18,583.83 = 4,989.54/x
3. Step 3: Cross multiply
   12,384.42x = 18,583.83 × 4,989.54
4. Step 4: Simplify right side
   12,384.42x = 92,724,763.14
5. Step 5: Solve for x
   x = 92,724,763.14/12,384.42
6. Step 6: Final answer
   x = 7,487.21