Finding the Fourth Proportional to 21,436.30, 29,581.86 and 12,004.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436.30 : 29,581.86 = 12,004.84 : x
2. Step 2: Convert to fraction form
   21,436.30/29,581.86 = 12,004.84/x
3. Step 3: Cross multiply
   21,436.30x = 29,581.86 × 12,004.84
4. Step 4: Simplify right side
   21,436.30x = 355,125,496.20
5. Step 5: Solve for x
   x = 355,125,496.20/21,436.30
6. Step 6: Final answer
   x = 16,566.55