Finding the Fourth Proportional to 22,659.45, 31,270.86 and 12,588.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.45 : 31,270.86 = 12,588.09 : x
2. Step 2: Convert to fraction form
   22,659.45/31,270.86 = 12,588.09/x
3. Step 3: Cross multiply
   22,659.45x = 31,270.86 × 12,588.09
4. Step 4: Simplify right side
   22,659.45x = 393,640,400.06
5. Step 5: Solve for x
   x = 393,640,400.06/22,659.45
6. Step 6: Final answer
   x = 17,372.02