Finding the Fourth Proportional to 23,142.18, 31,936.70 and 13,588.84

Step by Step Solution

1. Step 1: Write the proportion equation
   23,142.18 : 31,936.70 = 13,588.84 : x
2. Step 2: Convert to fraction form
   23,142.18/31,936.70 = 13,588.84/x
3. Step 3: Cross multiply
   23,142.18x = 31,936.70 × 13,588.84
4. Step 4: Simplify right side
   23,142.18x = 433,982,706.43
5. Step 5: Solve for x
   x = 433,982,706.43/23,142.18
6. Step 6: Final answer
   x = 18,752.89