Finding the Fourth Proportional to 3,928.95, 5,422.69 and 2,436.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.95 : 5,422.69 = 2,436.53 : x
2. Step 2: Convert to fraction form
   3,928.95/5,422.69 = 2,436.53/x
3. Step 3: Cross multiply
   3,928.95x = 5,422.69 × 2,436.53
4. Step 4: Simplify right side
   3,928.95x = 13,212,527.22
5. Step 5: Solve for x
   x = 13,212,527.22/3,928.95
6. Step 6: Final answer
   x = 3,362.86