Finding the Fourth Proportional to 11,031.39, 16,531.43 and 5,479.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,031.39 : 16,531.43 = 5,479.25 : x
2. Step 2: Convert to fraction form
   11,031.39/16,531.43 = 5,479.25/x
3. Step 3: Cross multiply
   11,031.39x = 16,531.43 × 5,479.25
4. Step 4: Simplify right side
   11,031.39x = 90,579,727.77
5. Step 5: Solve for x
   x = 90,579,727.77/11,031.39
6. Step 6: Final answer
   x = 8,211.09