Finding the Fourth Proportional to 10,918.85, 16,368.54 and 5,072.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.85 : 16,368.54 = 5,072.27 : x
2. Step 2: Convert to fraction form
   10,918.85/16,368.54 = 5,072.27/x
3. Step 3: Cross multiply
   10,918.85x = 16,368.54 × 5,072.27
4. Step 4: Simplify right side
   10,918.85x = 83,025,654.39
5. Step 5: Solve for x
   x = 83,025,654.39/10,918.85
6. Step 6: Final answer
   x = 7,603.88