Finding the Fourth Proportional to 12,579.78, 17,363.73 and 10,079.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,579.78 : 17,363.73 = 10,079.34 : x
2. Step 2: Convert to fraction form
   12,579.78/17,363.73 = 10,079.34/x
3. Step 3: Cross multiply
   12,579.78x = 17,363.73 × 10,079.34
4. Step 4: Simplify right side
   12,579.78x = 175,014,938.34
5. Step 5: Solve for x
   x = 175,014,938.34/12,579.78
6. Step 6: Final answer
   x = 13,912.40