Finding the Fourth Proportional to 21,551.46, 29,743.52 and 12,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,551.46 : 29,743.52 = 12,123.06 : x
2. Step 2: Convert to fraction form
   21,551.46/29,743.52 = 12,123.06/x
3. Step 3: Cross multiply
   21,551.46x = 29,743.52 × 12,123.06
4. Step 4: Simplify right side
   21,551.46x = 360,582,416.96
5. Step 5: Solve for x
   x = 360,582,416.96/21,551.46
6. Step 6: Final answer
   x = 16,731.23