Finding the Fourth Proportional to 10,105.40, 15,165.03 and 3,531.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.40 : 15,165.03 = 3,531.59 : x
2. Step 2: Convert to fraction form
   10,105.40/15,165.03 = 3,531.59/x
3. Step 3: Cross multiply
   10,105.40x = 15,165.03 × 3,531.59
4. Step 4: Simplify right side
   10,105.40x = 53,556,662.58
5. Step 5: Solve for x
   x = 53,556,662.58/10,105.40
6. Step 6: Final answer
   x = 5,299.80