Finding the Fourth Proportional to 21,301.86, 29,396.69 and 12,354.67

Step by Step Solution

1. Step 1: Write the proportion equation
   21,301.86 : 29,396.69 = 12,354.67 : x
2. Step 2: Convert to fraction form
   21,301.86/29,396.69 = 12,354.67/x
3. Step 3: Cross multiply
   21,301.86x = 29,396.69 × 12,354.67
4. Step 4: Simplify right side
   21,301.86x = 363,186,425.34
5. Step 5: Solve for x
   x = 363,186,425.34/21,301.86
6. Step 6: Final answer
   x = 17,049.51