Finding the Fourth Proportional to 3,928.34, 5,891.89 and 2,551.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.34 : 5,891.89 = 2,551.44 : x
2. Step 2: Convert to fraction form
   3,928.34/5,891.89 = 2,551.44/x
3. Step 3: Cross multiply
   3,928.34x = 5,891.89 × 2,551.44
4. Step 4: Simplify right side
   3,928.34x = 15,032,803.82
5. Step 5: Solve for x
   x = 15,032,803.82/3,928.34
6. Step 6: Final answer
   x = 3,826.76