Finding the Fourth Proportional to 10,621.25, 15,930.83 and 3,225.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,621.25 : 15,930.83 = 3,225.77 : x
2. Step 2: Convert to fraction form
   10,621.25/15,930.83 = 3,225.77/x
3. Step 3: Cross multiply
   10,621.25x = 15,930.83 × 3,225.77
4. Step 4: Simplify right side
   10,621.25x = 51,389,187.69
5. Step 5: Solve for x
   x = 51,389,187.69/10,621.25
6. Step 6: Final answer
   x = 4,838.34