Finding the Fourth Proportional to 16,749.72, 23,109.69 and 10,380.99

Step by Step Solution

1. Step 1: Write the proportion equation
   16,749.72 : 23,109.69 = 10,380.99 : x
2. Step 2: Convert to fraction form
   16,749.72/23,109.69 = 10,380.99/x
3. Step 3: Cross multiply
   16,749.72x = 23,109.69 × 10,380.99
4. Step 4: Simplify right side
   16,749.72x = 239,901,460.79
5. Step 5: Solve for x
   x = 239,901,460.79/16,749.72
6. Step 6: Final answer
   x = 14,322.71