Finding the Fourth Proportional to 11,003.28, 15,184.59 and 10,605.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,003.28 : 15,184.59 = 10,605.99 : x
2. Step 2: Convert to fraction form
   11,003.28/15,184.59 = 10,605.99/x
3. Step 3: Cross multiply
   11,003.28x = 15,184.59 × 10,605.99
4. Step 4: Simplify right side
   11,003.28x = 161,047,609.69
5. Step 5: Solve for x
   x = 161,047,609.69/11,003.28
6. Step 6: Final answer
   x = 14,636.33