Finding the Fourth Proportional to 10,123.75, 15,185.72 and 3,550.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.75 : 15,185.72 = 3,550.09 : x
2. Step 2: Convert to fraction form
   10,123.75/15,185.72 = 3,550.09/x
3. Step 3: Cross multiply
   10,123.75x = 15,185.72 × 3,550.09
4. Step 4: Simplify right side
   10,123.75x = 53,910,672.71
5. Step 5: Solve for x
   x = 53,910,672.71/10,123.75
6. Step 6: Final answer
   x = 5,325.17