Finding the Fourth Proportional to 31,096.54, 42,906.81 and 18,349.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.54 : 42,906.81 = 18,349.08 : x
2. Step 2: Convert to fraction form
   31,096.54/42,906.81 = 18,349.08/x
3. Step 3: Cross multiply
   31,096.54x = 42,906.81 × 18,349.08
4. Step 4: Simplify right side
   31,096.54x = 787,300,489.23
5. Step 5: Solve for x
   x = 787,300,489.23/31,096.54
6. Step 6: Final answer
   x = 25,317.94