Finding the Fourth Proportional to 23,071.98, 31,839.63 and 13,640.46

Step by Step Solution

1. Step 1: Write the proportion equation
   23,071.98 : 31,839.63 = 13,640.46 : x
2. Step 2: Convert to fraction form
   23,071.98/31,839.63 = 13,640.46/x
3. Step 3: Cross multiply
   23,071.98x = 31,839.63 × 13,640.46
4. Step 4: Simplify right side
   23,071.98x = 434,307,199.43
5. Step 5: Solve for x
   x = 434,307,199.43/23,071.98
6. Step 6: Final answer
   x = 18,824.01