Finding the Fourth Proportional to 8,109, 12,167.16 and 4,646.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109 : 12,167.16 = 4,646.25 : x
2. Step 2: Convert to fraction form
   8,109/12,167.16 = 4,646.25/x
3. Step 3: Cross multiply
   8,109x = 12,167.16 × 4,646.25
4. Step 4: Simplify right side
   8,109x = 56,531,667.15
5. Step 5: Solve for x
   x = 56,531,667.15/8,109
6. Step 6: Final answer
   x = 6,971.47