Finding the Fourth Proportional to 21,506.02, 29,688.06 and 14,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,506.02 : 29,688.06 = 14,436.34 : x
2. Step 2: Convert to fraction form
   21,506.02/29,688.06 = 14,436.34/x
3. Step 3: Cross multiply
   21,506.02x = 29,688.06 × 14,436.34
4. Step 4: Simplify right side
   21,506.02x = 428,586,928.10
5. Step 5: Solve for x
   x = 428,586,928.10/21,506.02
6. Step 6: Final answer
   x = 19,928.70