Finding the Fourth Proportional to 22,443.95, 30,963.96 and 12,880.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.95 : 30,963.96 = 12,880.37 : x
2. Step 2: Convert to fraction form
   22,443.95/30,963.96 = 12,880.37/x
3. Step 3: Cross multiply
   22,443.95x = 30,963.96 × 12,880.37
4. Step 4: Simplify right side
   22,443.95x = 398,827,106.65
5. Step 5: Solve for x
   x = 398,827,106.65/22,443.95
6. Step 6: Final answer
   x = 17,769.92