Finding the Fourth Proportional to 16,888.30, 25,336.83 and 8,984.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,888.30 : 25,336.83 = 8,984.31 : x
2. Step 2: Convert to fraction form
   16,888.30/25,336.83 = 8,984.31/x
3. Step 3: Cross multiply
   16,888.30x = 25,336.83 × 8,984.31
4. Step 4: Simplify right side
   16,888.30x = 227,633,890.22
5. Step 5: Solve for x
   x = 227,633,890.22/16,888.30
6. Step 6: Final answer
   x = 13,478.80