Finding the Fourth Proportional to 21,066.67, 29,072.00 and 11,635.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,066.67 : 29,072.00 = 11,635.15 : x
2. Step 2: Convert to fraction form
   21,066.67/29,072.00 = 11,635.15/x
3. Step 3: Cross multiply
   21,066.67x = 29,072.00 × 11,635.15
4. Step 4: Simplify right side
   21,066.67x = 338,257,022.62
5. Step 5: Solve for x
   x = 338,257,022.62/21,066.67
6. Step 6: Final answer
   x = 16,056.50