Finding the Fourth Proportional to 11,119.64, 16,662.18 and 7,007

Step by Step Solution

1. Step 1: Write the proportion equation
   11,119.64 : 16,662.18 = 7,007 : x
2. Step 2: Convert to fraction form
   11,119.64/16,662.18 = 7,007/x
3. Step 3: Cross multiply
   11,119.64x = 16,662.18 × 7,007
4. Step 4: Simplify right side
   11,119.64x = 116,751,895.26
5. Step 5: Solve for x
   x = 116,751,895.26/11,119.64
6. Step 6: Final answer
   x = 10,499.61