Finding the Fourth Proportional to 8,923.86, 12,314.76 and 5,387.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,923.86 : 12,314.76 = 5,387.22 : x
2. Step 2: Convert to fraction form
   8,923.86/12,314.76 = 5,387.22/x
3. Step 3: Cross multiply
   8,923.86x = 12,314.76 × 5,387.22
4. Step 4: Simplify right side
   8,923.86x = 66,342,321.37
5. Step 5: Solve for x
   x = 66,342,321.37/8,923.86
6. Step 6: Final answer
   x = 7,434.26