Finding the Fourth Proportional to 5,228.07, 7,878.82 and 4,708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,228.07 : 7,878.82 = 4,708.72 : x
2. Step 2: Convert to fraction form
   5,228.07/7,878.82 = 4,708.72/x
3. Step 3: Cross multiply
   5,228.07x = 7,878.82 × 4,708.72
4. Step 4: Simplify right side
   5,228.07x = 37,099,157.31
5. Step 5: Solve for x
   x = 37,099,157.31/5,228.07
6. Step 6: Final answer
   x = 7,096.15