Finding the Fourth Proportional to 8,440.86, 11,641.83 and 5,416.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.86 : 11,641.83 = 5,416.27 : x
2. Step 2: Convert to fraction form
   8,440.86/11,641.83 = 5,416.27/x
3. Step 3: Cross multiply
   8,440.86x = 11,641.83 × 5,416.27
4. Step 4: Simplify right side
   8,440.86x = 63,055,245.16
5. Step 5: Solve for x
   x = 63,055,245.16/8,440.86
6. Step 6: Final answer
   x = 7,470.24