Finding the Fourth Proportional to 12,383.68, 18,584.34 and 4,990.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,383.68 : 18,584.34 = 4,990.12 : x
2. Step 2: Convert to fraction form
   12,383.68/18,584.34 = 4,990.12/x
3. Step 3: Cross multiply
   12,383.68x = 18,584.34 × 4,990.12
4. Step 4: Simplify right side
   12,383.68x = 92,738,086.72
5. Step 5: Solve for x
   x = 92,738,086.72/12,383.68
6. Step 6: Final answer
   x = 7,488.73