Finding the Fourth Proportional to 5,288.50, 7,298.13 and 2,931

Step by Step Solution

1. Step 1: Write the proportion equation
   5,288.50 : 7,298.13 = 2,931 : x
2. Step 2: Convert to fraction form
   5,288.50/7,298.13 = 2,931/x
3. Step 3: Cross multiply
   5,288.50x = 7,298.13 × 2,931
4. Step 4: Simplify right side
   5,288.50x = 21,390,819.03
5. Step 5: Solve for x
   x = 21,390,819.03/5,288.50
6. Step 6: Final answer
   x = 4,044.78