Finding the Fourth Proportional to 21,039.50, 29,045.03 and 13,084.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,039.50 : 29,045.03 = 13,084.29 : x
2. Step 2: Convert to fraction form
   21,039.50/29,045.03 = 13,084.29/x
3. Step 3: Cross multiply
   21,039.50x = 29,045.03 × 13,084.29
4. Step 4: Simplify right side
   21,039.50x = 380,033,530.16
5. Step 5: Solve for x
   x = 380,033,530.16/21,039.50
6. Step 6: Final answer
   x = 18,062.86