Finding the Fourth Proportional to 10,961.62, 16,435.86 and 5,031.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.62 : 16,435.86 = 5,031.09 : x
2. Step 2: Convert to fraction form
   10,961.62/16,435.86 = 5,031.09/x
3. Step 3: Cross multiply
   10,961.62x = 16,435.86 × 5,031.09
4. Step 4: Simplify right side
   10,961.62x = 82,690,222.26
5. Step 5: Solve for x
   x = 82,690,222.26/10,961.62
6. Step 6: Final answer
   x = 7,543.62