Finding the Fourth Proportional to 13,616.01, 20,427.72 and 5,296.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,616.01 : 20,427.72 = 5,296.35 : x
2. Step 2: Convert to fraction form
   13,616.01/20,427.72 = 5,296.35/x
3. Step 3: Cross multiply
   13,616.01x = 20,427.72 × 5,296.35
4. Step 4: Simplify right side
   13,616.01x = 108,192,354.82
5. Step 5: Solve for x
   x = 108,192,354.82/13,616.01
6. Step 6: Final answer
   x = 7,945.97