Finding the Fourth Proportional to 11,997.58, 17,969.91 and 7,066.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,997.58 : 17,969.91 = 7,066.30 : x
2. Step 2: Convert to fraction form
   11,997.58/17,969.91 = 7,066.30/x
3. Step 3: Cross multiply
   11,997.58x = 17,969.91 × 7,066.30
4. Step 4: Simplify right side
   11,997.58x = 126,980,775.03
5. Step 5: Solve for x
   x = 126,980,775.03/11,997.58
6. Step 6: Final answer
   x = 10,583.87