Finding the Fourth Proportional to 8,580.86, 12,935.59 and 8,009.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,580.86 : 12,935.59 = 8,009.34 : x
2. Step 2: Convert to fraction form
   8,580.86/12,935.59 = 8,009.34/x
3. Step 3: Cross multiply
   8,580.86x = 12,935.59 × 8,009.34
4. Step 4: Simplify right side
   8,580.86x = 103,605,538.41
5. Step 5: Solve for x
   x = 103,605,538.41/8,580.86
6. Step 6: Final answer
   x = 12,074.03