Finding the Fourth Proportional to 20,434.16, 30,659.34 and 7,957.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,434.16 : 30,659.34 = 7,957.94 : x
2. Step 2: Convert to fraction form
   20,434.16/30,659.34 = 7,957.94/x
3. Step 3: Cross multiply
   20,434.16x = 30,659.34 × 7,957.94
4. Step 4: Simplify right side
   20,434.16x = 243,985,034.86
5. Step 5: Solve for x
   x = 243,985,034.86/20,434.16
6. Step 6: Final answer
   x = 11,940.06