Finding the Fourth Proportional to 31,667.09, 43,693.37 and 18,918.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,667.09 : 43,693.37 = 18,918.24 : x
2. Step 2: Convert to fraction form
   31,667.09/43,693.37 = 18,918.24/x
3. Step 3: Cross multiply
   31,667.09x = 43,693.37 × 18,918.24
4. Step 4: Simplify right side
   31,667.09x = 826,601,565.48
5. Step 5: Solve for x
   x = 826,601,565.48/31,667.09
6. Step 6: Final answer
   x = 26,102.86