Finding the Fourth Proportional to 21,926.58, 30,251.25 and 12,488.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,926.58 : 30,251.25 = 12,488.46 : x
2. Step 2: Convert to fraction form
   21,926.58/30,251.25 = 12,488.46/x
3. Step 3: Cross multiply
   21,926.58x = 30,251.25 × 12,488.46
4. Step 4: Simplify right side
   21,926.58x = 377,791,525.58
5. Step 5: Solve for x
   x = 377,791,525.58/21,926.58
6. Step 6: Final answer
   x = 17,229.84