Finding the Fourth Proportional to 30,638.58, 45,964.41 and 10,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,638.58 : 45,964.41 = 10,648.72 : x
2. Step 2: Convert to fraction form
   30,638.58/45,964.41 = 10,648.72/x
3. Step 3: Cross multiply
   30,638.58x = 45,964.41 × 10,648.72
4. Step 4: Simplify right side
   30,638.58x = 489,462,132.06
5. Step 5: Solve for x
   x = 489,462,132.06/30,638.58
6. Step 6: Final answer
   x = 15,975.35