Finding the Fourth Proportional to 21,677.06, 32,484.38 and 12,771.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,677.06 : 32,484.38 = 12,771.38 : x
2. Step 2: Convert to fraction form
   21,677.06/32,484.38 = 12,771.38/x
3. Step 3: Cross multiply
   21,677.06x = 32,484.38 × 12,771.38
4. Step 4: Simplify right side
   21,677.06x = 414,870,134.77
5. Step 5: Solve for x
   x = 414,870,134.77/21,677.06
6. Step 6: Final answer
   x = 19,138.68