Finding the Fourth Proportional to 21,301.87, 29,396.71 and 12,354.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,301.87 : 29,396.71 = 12,354.69 : x
2. Step 2: Convert to fraction form
   21,301.87/29,396.71 = 12,354.69/x
3. Step 3: Cross multiply
   21,301.87x = 29,396.71 × 12,354.69
4. Step 4: Simplify right side
   21,301.87x = 363,187,239.07
5. Step 5: Solve for x
   x = 363,187,239.07/21,301.87
6. Step 6: Final answer
   x = 17,049.55