Finding the Fourth Proportional to 10,213.86, 15,322.72 and 3,550.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,213.86 : 15,322.72 = 3,550.11 : x
2. Step 2: Convert to fraction form
   10,213.86/15,322.72 = 3,550.11/x
3. Step 3: Cross multiply
   10,213.86x = 15,322.72 × 3,550.11
4. Step 4: Simplify right side
   10,213.86x = 54,397,281.82
5. Step 5: Solve for x
   x = 54,397,281.82/10,213.86
6. Step 6: Final answer
   x = 5,325.83