Finding the Fourth Proportional to 12,665.68, 17,478.30 and 7,076.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.68 : 17,478.30 = 7,076.68 : x
2. Step 2: Convert to fraction form
   12,665.68/17,478.30 = 7,076.68/x
3. Step 3: Cross multiply
   12,665.68x = 17,478.30 × 7,076.68
4. Step 4: Simplify right side
   12,665.68x = 123,688,336.04
5. Step 5: Solve for x
   x = 123,688,336.04/12,665.68
6. Step 6: Final answer
   x = 9,765.63