Finding the Fourth Proportional to 21,895.69, 30,216.29 and 12,464.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,895.69 : 30,216.29 = 12,464.32 : x
2. Step 2: Convert to fraction form
   21,895.69/30,216.29 = 12,464.32/x
3. Step 3: Cross multiply
   21,895.69x = 30,216.29 × 12,464.32
4. Step 4: Simplify right side
   21,895.69x = 376,625,507.77
5. Step 5: Solve for x
   x = 376,625,507.77/21,895.69
6. Step 6: Final answer
   x = 17,200.90