Finding the Fourth Proportional to 21,561.98, 32,282.76 and 11,665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,561.98 : 32,282.76 = 11,665.76 : x
2. Step 2: Convert to fraction form
   21,561.98/32,282.76 = 11,665.76/x
3. Step 3: Cross multiply
   21,561.98x = 32,282.76 × 11,665.76
4. Step 4: Simplify right side
   21,561.98x = 376,602,930.30
5. Step 5: Solve for x
   x = 376,602,930.30/21,561.98
6. Step 6: Final answer
   x = 17,466.06