Finding the Fourth Proportional to 12,935.76, 17,840.52 and 7,959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,935.76 : 17,840.52 = 7,959.12 : x
2. Step 2: Convert to fraction form
   12,935.76/17,840.52 = 7,959.12/x
3. Step 3: Cross multiply
   12,935.76x = 17,840.52 × 7,959.12
4. Step 4: Simplify right side
   12,935.76x = 141,994,839.54
5. Step 5: Solve for x
   x = 141,994,839.54/12,935.76
6. Step 6: Final answer
   x = 10,976.92