Finding the Fourth Proportional to 5,281.39, 7,287.82 and 3,156.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,281.39 : 7,287.82 = 3,156.49 : x
2. Step 2: Convert to fraction form
   5,281.39/7,287.82 = 3,156.49/x
3. Step 3: Cross multiply
   5,281.39x = 7,287.82 × 3,156.49
4. Step 4: Simplify right side
   5,281.39x = 23,003,915.17
5. Step 5: Solve for x
   x = 23,003,915.17/5,281.39
6. Step 6: Final answer
   x = 4,355.66