Finding the Fourth Proportional to 22,978.39, 34,437.78 and 10,318.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,978.39 : 34,437.78 = 10,318.80 : x
2. Step 2: Convert to fraction form
   22,978.39/34,437.78 = 10,318.80/x
3. Step 3: Cross multiply
   22,978.39x = 34,437.78 × 10,318.80
4. Step 4: Simplify right side
   22,978.39x = 355,356,503.97
5. Step 5: Solve for x
   x = 355,356,503.97/22,978.39
6. Step 6: Final answer
   x = 15,464.81