Finding the Fourth Proportional to 5,538.31, 7,642.73 and 3,020.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,538.31 : 7,642.73 = 3,020.47 : x
2. Step 2: Convert to fraction form
   5,538.31/7,642.73 = 3,020.47/x
3. Step 3: Cross multiply
   5,538.31x = 7,642.73 × 3,020.47
4. Step 4: Simplify right side
   5,538.31x = 23,084,659.62
5. Step 5: Solve for x
   x = 23,084,659.62/5,538.31
6. Step 6: Final answer
   x = 4,168.18