Finding the Fourth Proportional to 12,150.09, 18,223.47 and 4,759.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.09 : 18,223.47 = 4,759.71 : x
2. Step 2: Convert to fraction form
   12,150.09/18,223.47 = 4,759.71/x
3. Step 3: Cross multiply
   12,150.09x = 18,223.47 × 4,759.71
4. Step 4: Simplify right side
   12,150.09x = 86,738,432.39
5. Step 5: Solve for x
   x = 86,738,432.39/12,150.09
6. Step 6: Final answer
   x = 7,138.91