Finding the Fourth Proportional to 8,656.07, 12,984.71 and 3,109.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,656.07 : 12,984.71 = 3,109.46 : x
2. Step 2: Convert to fraction form
   8,656.07/12,984.71 = 3,109.46/x
3. Step 3: Cross multiply
   8,656.07x = 12,984.71 × 3,109.46
4. Step 4: Simplify right side
   8,656.07x = 40,375,355.89
5. Step 5: Solve for x
   x = 40,375,355.89/8,656.07
6. Step 6: Final answer
   x = 4,664.40