Finding the Fourth Proportional to 16,910.58, 25,368.60 and 5,221.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,910.58 : 25,368.60 = 5,221.06 : x
2. Step 2: Convert to fraction form
   16,910.58/25,368.60 = 5,221.06/x
3. Step 3: Cross multiply
   16,910.58x = 25,368.60 × 5,221.06
4. Step 4: Simplify right side
   16,910.58x = 132,450,982.72
5. Step 5: Solve for x
   x = 132,450,982.72/16,910.58
6. Step 6: Final answer
   x = 7,832.43