Finding the Fourth Proportional to 21,483.72, 29,648.70 and 12,052.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,483.72 : 29,648.70 = 12,052.08 : x
2. Step 2: Convert to fraction form
   21,483.72/29,648.70 = 12,052.08/x
3. Step 3: Cross multiply
   21,483.72x = 29,648.70 × 12,052.08
4. Step 4: Simplify right side
   21,483.72x = 357,328,504.30
5. Step 5: Solve for x
   x = 357,328,504.30/21,483.72
6. Step 6: Final answer
   x = 16,632.52