Finding the Fourth Proportional to 3,788.15, 5,227.88 and 2,109.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.15 : 5,227.88 = 2,109.93 : x
2. Step 2: Convert to fraction form
   3,788.15/5,227.88 = 2,109.93/x
3. Step 3: Cross multiply
   3,788.15x = 5,227.88 × 2,109.93
4. Step 4: Simplify right side
   3,788.15x = 11,030,450.30
5. Step 5: Solve for x
   x = 11,030,450.30/3,788.15
6. Step 6: Final answer
   x = 2,911.83