Finding the Fourth Proportional to 17,726.32, 24,449.88 and 15,238

Step by Step Solution

1. Step 1: Write the proportion equation
   17,726.32 : 24,449.88 = 15,238 : x
2. Step 2: Convert to fraction form
   17,726.32/24,449.88 = 15,238/x
3. Step 3: Cross multiply
   17,726.32x = 24,449.88 × 15,238
4. Step 4: Simplify right side
   17,726.32x = 372,567,271.44
5. Step 5: Solve for x
   x = 372,567,271.44/17,726.32
6. Step 6: Final answer
   x = 21,017.74