Finding the Fourth Proportional to 21,623.86, 29,842.56 and 12,066.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,623.86 : 29,842.56 = 12,066.82 : x
2. Step 2: Convert to fraction form
   21,623.86/29,842.56 = 12,066.82/x
3. Step 3: Cross multiply
   21,623.86x = 29,842.56 × 12,066.82
4. Step 4: Simplify right side
   21,623.86x = 360,104,799.86
5. Step 5: Solve for x
   x = 360,104,799.86/21,623.86
6. Step 6: Final answer
   x = 16,653.12