Finding the Fourth Proportional to 11,361.22, 15,677.69 and 7,112.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,361.22 : 15,677.69 = 7,112.09 : x
2. Step 2: Convert to fraction form
   11,361.22/15,677.69 = 7,112.09/x
3. Step 3: Cross multiply
   11,361.22x = 15,677.69 × 7,112.09
4. Step 4: Simplify right side
   11,361.22x = 111,501,142.27
5. Step 5: Solve for x
   x = 111,501,142.27/11,361.22
6. Step 6: Final answer
   x = 9,814.19