Finding the Fourth Proportional to 22,955.50, 31,678.59 and 13,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,955.50 : 31,678.59 = 13,019.50 : x
2. Step 2: Convert to fraction form
   22,955.50/31,678.59 = 13,019.50/x
3. Step 3: Cross multiply
   22,955.50x = 31,678.59 × 13,019.50
4. Step 4: Simplify right side
   22,955.50x = 412,439,402.51
5. Step 5: Solve for x
   x = 412,439,402.51/22,955.50
6. Step 6: Final answer
   x = 17,966.91