Finding the Fourth Proportional to 22,990, 31,726.23 and 13,054

Step by Step Solution

1. Step 1: Write the proportion equation
   22,990 : 31,726.23 = 13,054 : x
2. Step 2: Convert to fraction form
   22,990/31,726.23 = 13,054/x
3. Step 3: Cross multiply
   22,990x = 31,726.23 × 13,054
4. Step 4: Simplify right side
   22,990x = 414,154,206.42
5. Step 5: Solve for x
   x = 414,154,206.42/22,990
6. Step 6: Final answer
   x = 18,014.54