Finding the Fourth Proportional to 12,103.14, 18,158.22 and 4,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,103.14 : 18,158.22 = 4,312.56 : x
2. Step 2: Convert to fraction form
   12,103.14/18,158.22 = 4,312.56/x
3. Step 3: Cross multiply
   12,103.14x = 18,158.22 × 4,312.56
4. Step 4: Simplify right side
   12,103.14x = 78,308,413.24
5. Step 5: Solve for x
   x = 78,308,413.24/12,103.14
6. Step 6: Final answer
   x = 6,470.09