Finding the Fourth Proportional to 13,103.98, 19,646.70 and 4,216.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,103.98 : 19,646.70 = 4,216.56 : x
2. Step 2: Convert to fraction form
   13,103.98/19,646.70 = 4,216.56/x
3. Step 3: Cross multiply
   13,103.98x = 19,646.70 × 4,216.56
4. Step 4: Simplify right side
   13,103.98x = 82,841,423.58
5. Step 5: Solve for x
   x = 82,841,423.58/13,103.98
6. Step 6: Final answer
   x = 6,321.85