Finding the Fourth Proportional to 12,944.15, 17,862.34 and 7,916.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,944.15 : 17,862.34 = 7,916.79 : x
2. Step 2: Convert to fraction form
   12,944.15/17,862.34 = 7,916.79/x
3. Step 3: Cross multiply
   12,944.15x = 17,862.34 × 7,916.79
4. Step 4: Simplify right side
   12,944.15x = 141,412,394.69
5. Step 5: Solve for x
   x = 141,412,394.69/12,944.15
6. Step 6: Final answer
   x = 10,924.81