Finding the Fourth Proportional to 21,477.38, 29,638.78 and 12,048.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,477.38 : 29,638.78 = 12,048.98 : x
2. Step 2: Convert to fraction form
   21,477.38/29,638.78 = 12,048.98/x
3. Step 3: Cross multiply
   21,477.38x = 29,638.78 × 12,048.98
4. Step 4: Simplify right side
   21,477.38x = 357,117,007.20
5. Step 5: Solve for x
   x = 357,117,007.20/21,477.38
6. Step 6: Final answer
   x = 16,627.59