Finding the Fourth Proportional to 12,665.43, 18,994.23 and 4,769.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.43 : 18,994.23 = 4,769.08 : x
2. Step 2: Convert to fraction form
   12,665.43/18,994.23 = 4,769.08/x
3. Step 3: Cross multiply
   12,665.43x = 18,994.23 × 4,769.08
4. Step 4: Simplify right side
   12,665.43x = 90,584,954.92
5. Step 5: Solve for x
   x = 90,584,954.92/12,665.43
6. Step 6: Final answer
   x = 7,152.14