Finding the Fourth Proportional to 23,061.68, 31,822.96 and 13,628.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,061.68 : 31,822.96 = 13,628.40 : x
2. Step 2: Convert to fraction form
   23,061.68/31,822.96 = 13,628.40/x
3. Step 3: Cross multiply
   23,061.68x = 31,822.96 × 13,628.40
4. Step 4: Simplify right side
   23,061.68x = 433,696,028.06
5. Step 5: Solve for x
   x = 433,696,028.06/23,061.68
6. Step 6: Final answer
   x = 18,805.92