Finding the Fourth Proportional to 21,462.12, 29,617.92 and 12,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,462.12 : 29,617.92 = 12,030.72 : x
2. Step 2: Convert to fraction form
   21,462.12/29,617.92 = 12,030.72/x
3. Step 3: Cross multiply
   21,462.12x = 29,617.92 × 12,030.72
4. Step 4: Simplify right side
   21,462.12x = 356,324,902.50
5. Step 5: Solve for x
   x = 356,324,902.50/21,462.12
6. Step 6: Final answer
   x = 16,602.50