Finding the Fourth Proportional to 5,097.34, 7,034.78 and 2,859.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,097.34 : 7,034.78 = 2,859.20 : x
2. Step 2: Convert to fraction form
   5,097.34/7,034.78 = 2,859.20/x
3. Step 3: Cross multiply
   5,097.34x = 7,034.78 × 2,859.20
4. Step 4: Simplify right side
   5,097.34x = 20,113,842.98
5. Step 5: Solve for x
   x = 20,113,842.98/5,097.34
6. Step 6: Final answer
   x = 3,945.95