Finding the Fourth Proportional to 19,992, 27,590.88 and 12,538.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,992 : 27,590.88 = 12,538.56 : x
2. Step 2: Convert to fraction form
   19,992/27,590.88 = 12,538.56/x
3. Step 3: Cross multiply
   19,992x = 27,590.88 × 12,538.56
4. Step 4: Simplify right side
   19,992x = 345,949,904.33
5. Step 5: Solve for x
   x = 345,949,904.33/19,992
6. Step 6: Final answer
   x = 17,304.42