Finding the Fourth Proportional to 5,538.78, 7,643.27 and 3,020.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,538.78 : 7,643.27 = 3,020.84 : x
2. Step 2: Convert to fraction form
   5,538.78/7,643.27 = 3,020.84/x
3. Step 3: Cross multiply
   5,538.78x = 7,643.27 × 3,020.84
4. Step 4: Simplify right side
   5,538.78x = 23,089,093.74
5. Step 5: Solve for x
   x = 23,089,093.74/5,538.78
6. Step 6: Final answer
   x = 4,168.62