Finding the Fourth Proportional to 21,715.82, 29,967.83 and 11,779.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,715.82 : 29,967.83 = 11,779.82 : x
2. Step 2: Convert to fraction form
   21,715.82/29,967.83 = 11,779.82/x
3. Step 3: Cross multiply
   21,715.82x = 29,967.83 × 11,779.82
4. Step 4: Simplify right side
   21,715.82x = 353,015,434.45
5. Step 5: Solve for x
   x = 353,015,434.45/21,715.82
6. Step 6: Final answer
   x = 16,256.14