Finding the Fourth Proportional to 9,361.38, 12,918.71 and 5,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,361.38 : 12,918.71 = 5,112.50 : x
2. Step 2: Convert to fraction form
   9,361.38/12,918.71 = 5,112.50/x
3. Step 3: Cross multiply
   9,361.38x = 12,918.71 × 5,112.50
4. Step 4: Simplify right side
   9,361.38x = 66,046,904.88
5. Step 5: Solve for x
   x = 66,046,904.88/9,361.38
6. Step 6: Final answer
   x = 7,055.25