Finding the Fourth Proportional to 21,123.81, 29,150.27 and 12,048.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,123.81 : 29,150.27 = 12,048.96 : x
2. Step 2: Convert to fraction form
   21,123.81/29,150.27 = 12,048.96/x
3. Step 3: Cross multiply
   21,123.81x = 29,150.27 × 12,048.96
4. Step 4: Simplify right side
   21,123.81x = 351,230,437.22
5. Step 5: Solve for x
   x = 351,230,437.22/21,123.81
6. Step 6: Final answer
   x = 16,627.23