Finding the Fourth Proportional to 21,066.64, 29,071.56 and 11,635

Step by Step Solution

1. Step 1: Write the proportion equation
   21,066.64 : 29,071.56 = 11,635 : x
2. Step 2: Convert to fraction form
   21,066.64/29,071.56 = 11,635/x
3. Step 3: Cross multiply
   21,066.64x = 29,071.56 × 11,635
4. Step 4: Simplify right side
   21,066.64x = 338,247,600.60
5. Step 5: Solve for x
   x = 338,247,600.60/21,066.64
6. Step 6: Final answer
   x = 16,056.08