Finding the Fourth Proportional to 16,890.56, 23,300.16 and 11,300.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.56 : 23,300.16 = 11,300.48 : x
2. Step 2: Convert to fraction form
   16,890.56/23,300.16 = 11,300.48/x
3. Step 3: Cross multiply
   16,890.56x = 23,300.16 × 11,300.48
4. Step 4: Simplify right side
   16,890.56x = 263,302,992.08
5. Step 5: Solve for x
   x = 263,302,992.08/16,890.56
6. Step 6: Final answer
   x = 15,588.77