Finding the Fourth Proportional to 5,094.57, 7,031.30 and 2,857.35

Step by Step Solution

1. Step 1: Write the proportion equation
   5,094.57 : 7,031.30 = 2,857.35 : x
2. Step 2: Convert to fraction form
   5,094.57/7,031.30 = 2,857.35/x
3. Step 3: Cross multiply
   5,094.57x = 7,031.30 × 2,857.35
4. Step 4: Simplify right side
   5,094.57x = 20,090,870.77
5. Step 5: Solve for x
   x = 20,090,870.77/5,094.57
6. Step 6: Final answer
   x = 3,943.59