Finding the Fourth Proportional to 5,491.16, 8,279.79 and 5,031.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,491.16 : 8,279.79 = 5,031.89 : x
2. Step 2: Convert to fraction form
   5,491.16/8,279.79 = 5,031.89/x
3. Step 3: Cross multiply
   5,491.16x = 8,279.79 × 5,031.89
4. Step 4: Simplify right side
   5,491.16x = 41,662,951.10
5. Step 5: Solve for x
   x = 41,662,951.10/5,491.16
6. Step 6: Final answer
   x = 7,587.28