Finding the Fourth Proportional to 13,411.33, 20,123.49 and 5,519.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.33 : 20,123.49 = 5,519.68 : x
2. Step 2: Convert to fraction form
   13,411.33/20,123.49 = 5,519.68/x
3. Step 3: Cross multiply
   13,411.33x = 20,123.49 × 5,519.68
4. Step 4: Simplify right side
   13,411.33x = 111,075,225.28
5. Step 5: Solve for x
   x = 111,075,225.28/13,411.33
6. Step 6: Final answer
   x = 8,282.19