Finding the Fourth Proportional to 21,895.76, 30,216.84 and 12,464.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,895.76 : 30,216.84 = 12,464.12 : x
2. Step 2: Convert to fraction form
   21,895.76/30,216.84 = 12,464.12/x
3. Step 3: Cross multiply
   21,895.76x = 30,216.84 × 12,464.12
4. Step 4: Simplify right side
   21,895.76x = 376,626,319.78
5. Step 5: Solve for x
   x = 376,626,319.78/21,895.76
6. Step 6: Final answer
   x = 17,200.88