Finding the Fourth Proportional to 21,047.94, 29,039.38 and 13,975.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,047.94 : 29,039.38 = 13,975.76 : x
2. Step 2: Convert to fraction form
   21,047.94/29,039.38 = 13,975.76/x
3. Step 3: Cross multiply
   21,047.94x = 29,039.38 × 13,975.76
4. Step 4: Simplify right side
   21,047.94x = 405,847,443.09
5. Step 5: Solve for x
   x = 405,847,443.09/21,047.94
6. Step 6: Final answer
   x = 19,282.05