Finding the Fourth Proportional to 22,739.47, 31,381.79 and 12,667.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,739.47 : 31,381.79 = 12,667.58 : x
2. Step 2: Convert to fraction form
   22,739.47/31,381.79 = 12,667.58/x
3. Step 3: Cross multiply
   22,739.47x = 31,381.79 × 12,667.58
4. Step 4: Simplify right side
   22,739.47x = 397,531,335.37
5. Step 5: Solve for x
   x = 397,531,335.37/22,739.47
6. Step 6: Final answer
   x = 17,482.00