Finding the Fourth Proportional to 21,066.48, 29,059.56 and 13,614.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,066.48 : 29,059.56 = 13,614.48 : x
2. Step 2: Convert to fraction form
   21,066.48/29,059.56 = 13,614.48/x
3. Step 3: Cross multiply
   21,066.48x = 29,059.56 × 13,614.48
4. Step 4: Simplify right side
   21,066.48x = 395,630,798.43
5. Step 5: Solve for x
   x = 395,630,798.43/21,066.48
6. Step 6: Final answer
   x = 18,780.11