Finding the Fourth Proportional to 22,939.43, 31,667.54 and 15,383.01

Step by Step Solution

1. Step 1: Write the proportion equation
   22,939.43 : 31,667.54 = 15,383.01 : x
2. Step 2: Convert to fraction form
   22,939.43/31,667.54 = 15,383.01/x
3. Step 3: Cross multiply
   22,939.43x = 31,667.54 × 15,383.01
4. Step 4: Simplify right side
   22,939.43x = 487,142,010.57
5. Step 5: Solve for x
   x = 487,142,010.57/22,939.43
6. Step 6: Final answer
   x = 21,236.01