Finding the Fourth Proportional to 21,556.06, 32,301.69 and 12,185.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,556.06 : 32,301.69 = 12,185.98 : x
2. Step 2: Convert to fraction form
   21,556.06/32,301.69 = 12,185.98/x
3. Step 3: Cross multiply
   21,556.06x = 32,301.69 × 12,185.98
4. Step 4: Simplify right side
   21,556.06x = 393,627,748.31
5. Step 5: Solve for x
   x = 393,627,748.31/21,556.06
6. Step 6: Final answer
   x = 18,260.65