Finding the Fourth Proportional to 5,157.16, 7,719.89 and 3,310.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,157.16 : 7,719.89 = 3,310.05 : x
2. Step 2: Convert to fraction form
   5,157.16/7,719.89 = 3,310.05/x
3. Step 3: Cross multiply
   5,157.16x = 7,719.89 × 3,310.05
4. Step 4: Simplify right side
   5,157.16x = 25,553,221.89
5. Step 5: Solve for x
   x = 25,553,221.89/5,157.16
6. Step 6: Final answer
   x = 4,954.90