Finding the Fourth Proportional to 10,648.53, 15,960.85 and 3,621.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,648.53 : 15,960.85 = 3,621.98 : x
2. Step 2: Convert to fraction form
   10,648.53/15,960.85 = 3,621.98/x
3. Step 3: Cross multiply
   10,648.53x = 15,960.85 × 3,621.98
4. Step 4: Simplify right side
   10,648.53x = 57,809,910.33
5. Step 5: Solve for x
   x = 57,809,910.33/10,648.53
6. Step 6: Final answer
   x = 5,428.91