Finding the Fourth Proportional to 21,656.12, 29,885.81 and 12,096.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,656.12 : 29,885.81 = 12,096.83 : x
2. Step 2: Convert to fraction form
   21,656.12/29,885.81 = 12,096.83/x
3. Step 3: Cross multiply
   21,656.12x = 29,885.81 × 12,096.83
4. Step 4: Simplify right side
   21,656.12x = 361,523,577.21
5. Step 5: Solve for x
   x = 361,523,577.21/21,656.12
6. Step 6: Final answer
   x = 16,693.83