Finding the Fourth Proportional to 6,483.30, 9,726.15 and 2,100.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,483.30 : 9,726.15 = 2,100.90 : x
2. Step 2: Convert to fraction form
   6,483.30/9,726.15 = 2,100.90/x
3. Step 3: Cross multiply
   6,483.30x = 9,726.15 × 2,100.90
4. Step 4: Simplify right side
   6,483.30x = 20,433,668.54
5. Step 5: Solve for x
   x = 20,433,668.54/6,483.30
6. Step 6: Final answer
   x = 3,151.74