Finding the Fourth Proportional to 21,703.89, 32,556.78 and 10,619.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,703.89 : 32,556.78 = 10,619.91 : x
2. Step 2: Convert to fraction form
   21,703.89/32,556.78 = 10,619.91/x
3. Step 3: Cross multiply
   21,703.89x = 32,556.78 × 10,619.91
4. Step 4: Simplify right side
   21,703.89x = 345,750,073.49
5. Step 5: Solve for x
   x = 345,750,073.49/21,703.89
6. Step 6: Final answer
   x = 15,930.33