Finding the Fourth Proportional to 21,435.52, 29,580.96 and 12,004

Step by Step Solution

1. Step 1: Write the proportion equation
   21,435.52 : 29,580.96 = 12,004 : x
2. Step 2: Convert to fraction form
   21,435.52/29,580.96 = 12,004/x
3. Step 3: Cross multiply
   21,435.52x = 29,580.96 × 12,004
4. Step 4: Simplify right side
   21,435.52x = 355,089,843.84
5. Step 5: Solve for x
   x = 355,089,843.84/21,435.52
6. Step 6: Final answer
   x = 16,565.49