Finding the Fourth Proportional to 10,123.91, 15,185.99 and 3,550.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.91 : 15,185.99 = 3,550.28 : x
2. Step 2: Convert to fraction form
   10,123.91/15,185.99 = 3,550.28/x
3. Step 3: Cross multiply
   10,123.91x = 15,185.99 × 3,550.28
4. Step 4: Simplify right side
   10,123.91x = 53,914,516.58
5. Step 5: Solve for x
   x = 53,914,516.58/10,123.91
6. Step 6: Final answer
   x = 5,325.47