Finding the Fourth Proportional to 21,844.63, 30,144.60 and 13,360.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,844.63 : 30,144.60 = 13,360.96 : x
2. Step 2: Convert to fraction form
   21,844.63/30,144.60 = 13,360.96/x
3. Step 3: Cross multiply
   21,844.63x = 30,144.60 × 13,360.96
4. Step 4: Simplify right side
   21,844.63x = 402,760,794.82
5. Step 5: Solve for x
   x = 402,760,794.82/21,844.63
6. Step 6: Final answer
   x = 18,437.52