Finding the Fourth Proportional to 21,251.96, 29,325.87 and 12,300.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,251.96 : 29,325.87 = 12,300.04 : x
2. Step 2: Convert to fraction form
   21,251.96/29,325.87 = 12,300.04/x
3. Step 3: Cross multiply
   21,251.96x = 29,325.87 × 12,300.04
4. Step 4: Simplify right side
   21,251.96x = 360,709,300.72
5. Step 5: Solve for x
   x = 360,709,300.72/21,251.96
6. Step 6: Final answer
   x = 16,972.99