Finding the Fourth Proportional to 11,271, 16,905.68 and 5,031.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,271 : 16,905.68 = 5,031.57 : x
2. Step 2: Convert to fraction form
   11,271/16,905.68 = 5,031.57/x
3. Step 3: Cross multiply
   11,271x = 16,905.68 × 5,031.57
4. Step 4: Simplify right side
   11,271x = 85,062,112.32
5. Step 5: Solve for x
   x = 85,062,112.32/11,271
6. Step 6: Final answer
   x = 7,546.99