Finding the Fourth Proportional to 12,426.95, 17,141.91 and 7,949.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.95 : 17,141.91 = 7,949.07 : x
2. Step 2: Convert to fraction form
   12,426.95/17,141.91 = 7,949.07/x
3. Step 3: Cross multiply
   12,426.95x = 17,141.91 × 7,949.07
4. Step 4: Simplify right side
   12,426.95x = 136,262,242.52
5. Step 5: Solve for x
   x = 136,262,242.52/12,426.95
6. Step 6: Final answer
   x = 10,965.06