Finding the Fourth Proportional to 22,799.53, 31,458.78 and 12,726.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,799.53 : 31,458.78 = 12,726.37 : x
2. Step 2: Convert to fraction form
   22,799.53/31,458.78 = 12,726.37/x
3. Step 3: Cross multiply
   22,799.53x = 31,458.78 × 12,726.37
4. Step 4: Simplify right side
   22,799.53x = 400,355,936.40
5. Step 5: Solve for x
   x = 400,355,936.40/22,799.53
6. Step 6: Final answer
   x = 17,559.84