Finding the Fourth Proportional to 8,931.15, 12,319.52 and 5,906.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,931.15 : 12,319.52 = 5,906.27 : x
2. Step 2: Convert to fraction form
   8,931.15/12,319.52 = 5,906.27/x
3. Step 3: Cross multiply
   8,931.15x = 12,319.52 × 5,906.27
4. Step 4: Simplify right side
   8,931.15x = 72,762,412.66
5. Step 5: Solve for x
   x = 72,762,412.66/8,931.15
6. Step 6: Final answer
   x = 8,147.04