Finding the Fourth Proportional to 17,213.84, 23,756.20 and 9,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,213.84 : 23,756.20 = 9,660.72 : x
2. Step 2: Convert to fraction form
   17,213.84/23,756.20 = 9,660.72/x
3. Step 3: Cross multiply
   17,213.84x = 23,756.20 × 9,660.72
4. Step 4: Simplify right side
   17,213.84x = 229,501,996.46
5. Step 5: Solve for x
   x = 229,501,996.46/17,213.84
6. Step 6: Final answer
   x = 13,332.41