Finding the Fourth Proportional to 5,258.79, 7,897.37 and 4,847.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258.79 : 7,897.37 = 4,847.31 : x
2. Step 2: Convert to fraction form
   5,258.79/7,897.37 = 4,847.31/x
3. Step 3: Cross multiply
   5,258.79x = 7,897.37 × 4,847.31
4. Step 4: Simplify right side
   5,258.79x = 38,280,976.34
5. Step 5: Solve for x
   x = 38,280,976.34/5,258.79
6. Step 6: Final answer
   x = 7,279.43