Finding the Fourth Proportional to 13,850.57, 20,770.73 and 5,528.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,850.57 : 20,770.73 = 5,528.09 : x
2. Step 2: Convert to fraction form
   13,850.57/20,770.73 = 5,528.09/x
3. Step 3: Cross multiply
   13,850.57x = 20,770.73 × 5,528.09
4. Step 4: Simplify right side
   13,850.57x = 114,822,437.17
5. Step 5: Solve for x
   x = 114,822,437.17/13,850.57
6. Step 6: Final answer
   x = 8,290.09