Finding the Fourth Proportional to 21,776.34, 32,666.01 and 8,628.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,776.34 : 32,666.01 = 8,628.69 : x
2. Step 2: Convert to fraction form
   21,776.34/32,666.01 = 8,628.69/x
3. Step 3: Cross multiply
   21,776.34x = 32,666.01 × 8,628.69
4. Step 4: Simplify right side
   21,776.34x = 281,864,873.83
5. Step 5: Solve for x
   x = 281,864,873.83/21,776.34
6. Step 6: Final answer
   x = 12,943.63