Finding the Fourth Proportional to 23,164.89, 31,990.23 and 19,788

Step by Step Solution

1. Step 1: Write the proportion equation
   23,164.89 : 31,990.23 = 19,788 : x
2. Step 2: Convert to fraction form
   23,164.89/31,990.23 = 19,788/x
3. Step 3: Cross multiply
   23,164.89x = 31,990.23 × 19,788
4. Step 4: Simplify right side
   23,164.89x = 633,022,671.24
5. Step 5: Solve for x
   x = 633,022,671.24/23,164.89
6. Step 6: Final answer
   x = 27,326.82