Finding the Fourth Proportional to 12,959.72, 19,440.54 and 3,726.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.72 : 19,440.54 = 3,726.44 : x
2. Step 2: Convert to fraction form
   12,959.72/19,440.54 = 3,726.44/x
3. Step 3: Cross multiply
   12,959.72x = 19,440.54 × 3,726.44
4. Step 4: Simplify right side
   12,959.72x = 72,444,005.88
5. Step 5: Solve for x
   x = 72,444,005.88/12,959.72
6. Step 6: Final answer
   x = 5,589.94