Finding the Fourth Proportional to 8,945.49, 12,345.35 and 5,168.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,945.49 : 12,345.35 = 5,168.81 : x
2. Step 2: Convert to fraction form
   8,945.49/12,345.35 = 5,168.81/x
3. Step 3: Cross multiply
   8,945.49x = 12,345.35 × 5,168.81
4. Step 4: Simplify right side
   8,945.49x = 63,810,812.32
5. Step 5: Solve for x
   x = 63,810,812.32/8,945.49
6. Step 6: Final answer
   x = 7,133.29