Finding the Fourth Proportional to 13,279.22, 19,928.01 and 5,488.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,279.22 : 19,928.01 = 5,488.10 : x
2. Step 2: Convert to fraction form
   13,279.22/19,928.01 = 5,488.10/x
3. Step 3: Cross multiply
   13,279.22x = 19,928.01 × 5,488.10
4. Step 4: Simplify right side
   13,279.22x = 109,366,911.68
5. Step 5: Solve for x
   x = 109,366,911.68/13,279.22
6. Step 6: Final answer
   x = 8,235.94