Finding the Fourth Proportional to 21,251.94, 29,325.89 and 12,300.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,251.94 : 29,325.89 = 12,300.03 : x
2. Step 2: Convert to fraction form
   21,251.94/29,325.89 = 12,300.03/x
3. Step 3: Cross multiply
   21,251.94x = 29,325.89 × 12,300.03
4. Step 4: Simplify right side
   21,251.94x = 360,709,265.28
5. Step 5: Solve for x
   x = 360,709,265.28/21,251.94
6. Step 6: Final answer
   x = 16,973.00