Finding the Fourth Proportional to 21,847.58, 30,152.23 and 12,417.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,847.58 : 30,152.23 = 12,417.56 : x
2. Step 2: Convert to fraction form
   21,847.58/30,152.23 = 12,417.56/x
3. Step 3: Cross multiply
   21,847.58x = 30,152.23 × 12,417.56
4. Step 4: Simplify right side
   21,847.58x = 374,417,063.07
5. Step 5: Solve for x
   x = 374,417,063.07/21,847.58
6. Step 6: Final answer
   x = 17,137.69