Finding the Fourth Proportional to 3,809.95, 5,712.01 and 2,636.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,809.95 : 5,712.01 = 2,636.83 : x
2. Step 2: Convert to fraction form
   3,809.95/5,712.01 = 2,636.83/x
3. Step 3: Cross multiply
   3,809.95x = 5,712.01 × 2,636.83
4. Step 4: Simplify right side
   3,809.95x = 15,061,599.33
5. Step 5: Solve for x
   x = 15,061,599.33/3,809.95
6. Step 6: Final answer
   x = 3,953.23