Finding the Fourth Proportional to 21,984.59, 30,338.07 and 12,551.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,984.59 : 30,338.07 = 12,551.31 : x
2. Step 2: Convert to fraction form
   21,984.59/30,338.07 = 12,551.31/x
3. Step 3: Cross multiply
   21,984.59x = 30,338.07 × 12,551.31
4. Step 4: Simplify right side
   21,984.59x = 380,782,521.37
5. Step 5: Solve for x
   x = 380,782,521.37/21,984.59
6. Step 6: Final answer
   x = 17,320.43