Finding the Fourth Proportional to 13,938.53, 20,911.89 and 5,614.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,938.53 : 20,911.89 = 5,614.26 : x
2. Step 2: Convert to fraction form
   13,938.53/20,911.89 = 5,614.26/x
3. Step 3: Cross multiply
   13,938.53x = 20,911.89 × 5,614.26
4. Step 4: Simplify right side
   13,938.53x = 117,404,798.80
5. Step 5: Solve for x
   x = 117,404,798.80/13,938.53
6. Step 6: Final answer
   x = 8,423.04