Finding the Fourth Proportional to 30,912.94, 42,659.55 and 17,486.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,912.94 : 42,659.55 = 17,486.81 : x
2. Step 2: Convert to fraction form
   30,912.94/42,659.55 = 17,486.81/x
3. Step 3: Cross multiply
   30,912.94x = 42,659.55 × 17,486.81
4. Step 4: Simplify right side
   30,912.94x = 745,979,445.54
5. Step 5: Solve for x
   x = 745,979,445.54/30,912.94
6. Step 6: Final answer
   x = 24,131.62