Finding the Fourth Proportional to 5,196.28, 7,799.44 and 4,915.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.28 : 7,799.44 = 4,915.31 : x
2. Step 2: Convert to fraction form
   5,196.28/7,799.44 = 4,915.31/x
3. Step 3: Cross multiply
   5,196.28x = 7,799.44 × 4,915.31
4. Step 4: Simplify right side
   5,196.28x = 38,336,645.29
5. Step 5: Solve for x
   x = 38,336,645.29/5,196.28
6. Step 6: Final answer
   x = 7,377.71