Finding the Fourth Proportional to 21,556.89, 32,307.30 and 12,068.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,556.89 : 32,307.30 = 12,068.82 : x
2. Step 2: Convert to fraction form
   21,556.89/32,307.30 = 12,068.82/x
3. Step 3: Cross multiply
   21,556.89x = 32,307.30 × 12,068.82
4. Step 4: Simplify right side
   21,556.89x = 389,910,988.39
5. Step 5: Solve for x
   x = 389,910,988.39/21,556.89
6. Step 6: Final answer
   x = 18,087.53