Finding the Fourth Proportional to 21,091.22, 29,104.98 and 12,132.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,091.22 : 29,104.98 = 12,132.62 : x
2. Step 2: Convert to fraction form
   21,091.22/29,104.98 = 12,132.62/x
3. Step 3: Cross multiply
   21,091.22x = 29,104.98 × 12,132.62
4. Step 4: Simplify right side
   21,091.22x = 353,119,662.45
5. Step 5: Solve for x
   x = 353,119,662.45/21,091.22
6. Step 6: Final answer
   x = 16,742.50