Finding the Fourth Proportional to 5,411.76, 8,111.34 and 2,290.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,411.76 : 8,111.34 = 2,290.73 : x
2. Step 2: Convert to fraction form
   5,411.76/8,111.34 = 2,290.73/x
3. Step 3: Cross multiply
   5,411.76x = 8,111.34 × 2,290.73
4. Step 4: Simplify right side
   5,411.76x = 18,580,894.95
5. Step 5: Solve for x
   x = 18,580,894.95/5,411.76
6. Step 6: Final answer
   x = 3,433.43