Finding the Fourth Proportional to 13,789.24, 20,672.16 and 5,475.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,789.24 : 20,672.16 = 5,475.10 : x
2. Step 2: Convert to fraction form
   13,789.24/20,672.16 = 5,475.10/x
3. Step 3: Cross multiply
   13,789.24x = 20,672.16 × 5,475.10
4. Step 4: Simplify right side
   13,789.24x = 113,182,143.22
5. Step 5: Solve for x
   x = 113,182,143.22/13,789.24
6. Step 6: Final answer
   x = 8,208.00