Finding the Fourth Proportional to 11,271.31, 16,906.15 and 5,031.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,271.31 : 16,906.15 = 5,031.88 : x
2. Step 2: Convert to fraction form
   11,271.31/16,906.15 = 5,031.88/x
3. Step 3: Cross multiply
   11,271.31x = 16,906.15 × 5,031.88
4. Step 4: Simplify right side
   11,271.31x = 85,069,682.09
5. Step 5: Solve for x
   x = 85,069,682.09/11,271.31
6. Step 6: Final answer
   x = 7,547.45