Finding the Fourth Proportional to 13,218.35, 19,826.18 and 4,453.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,218.35 : 19,826.18 = 4,453.34 : x
2. Step 2: Convert to fraction form
   13,218.35/19,826.18 = 4,453.34/x
3. Step 3: Cross multiply
   13,218.35x = 19,826.18 × 4,453.34
4. Step 4: Simplify right side
   13,218.35x = 88,292,698.17
5. Step 5: Solve for x
   x = 88,292,698.17/13,218.35
6. Step 6: Final answer
   x = 6,679.56