Finding the Fourth Proportional to 31,731.35, 43,783.71 and 18,113.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,731.35 : 43,783.71 = 18,113.18 : x
2. Step 2: Convert to fraction form
   31,731.35/43,783.71 = 18,113.18/x
3. Step 3: Cross multiply
   31,731.35x = 43,783.71 × 18,113.18
4. Step 4: Simplify right side
   31,731.35x = 793,062,001.38
5. Step 5: Solve for x
   x = 793,062,001.38/31,731.35
6. Step 6: Final answer
   x = 24,993.02