Finding the Fourth Proportional to 12,974.15, 17,899.41 and 7,935.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,974.15 : 17,899.41 = 7,935.85 : x
2. Step 2: Convert to fraction form
   12,974.15/17,899.41 = 7,935.85/x
3. Step 3: Cross multiply
   12,974.15x = 17,899.41 × 7,935.85
4. Step 4: Simplify right side
   12,974.15x = 142,047,032.85
5. Step 5: Solve for x
   x = 142,047,032.85/12,974.15
6. Step 6: Final answer
   x = 10,948.47