Finding the Fourth Proportional to 5,308.47, 7,324.43 and 3,985.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,308.47 : 7,324.43 = 3,985.34 : x
2. Step 2: Convert to fraction form
   5,308.47/7,324.43 = 3,985.34/x
3. Step 3: Cross multiply
   5,308.47x = 7,324.43 × 3,985.34
4. Step 4: Simplify right side
   5,308.47x = 29,190,287.31
5. Step 5: Solve for x
   x = 29,190,287.31/5,308.47
6. Step 6: Final answer
   x = 5,498.81