Finding the Fourth Proportional to 13,945.05, 20,914.49 and 4,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,945.05 : 20,914.49 = 4,085.10 : x
2. Step 2: Convert to fraction form
   13,945.05/20,914.49 = 4,085.10/x
3. Step 3: Cross multiply
   13,945.05x = 20,914.49 × 4,085.10
4. Step 4: Simplify right side
   13,945.05x = 85,437,783.10
5. Step 5: Solve for x
   x = 85,437,783.10/13,945.05
6. Step 6: Final answer
   x = 6,126.75