Finding the Fourth Proportional to 11,769.90, 17,736.47 and 10,662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,769.90 : 17,736.47 = 10,662.72 : x
2. Step 2: Convert to fraction form
   11,769.90/17,736.47 = 10,662.72/x
3. Step 3: Cross multiply
   11,769.90x = 17,736.47 × 10,662.72
4. Step 4: Simplify right side
   11,769.90x = 189,119,013.40
5. Step 5: Solve for x
   x = 189,119,013.40/11,769.90
6. Step 6: Final answer
   x = 16,068.02