Finding the Fourth Proportional to 12,300.98, 18,453.56 and 3,979.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.98 : 18,453.56 = 3,979.98 : x
2. Step 2: Convert to fraction form
   12,300.98/18,453.56 = 3,979.98/x
3. Step 3: Cross multiply
   12,300.98x = 18,453.56 × 3,979.98
4. Step 4: Simplify right side
   12,300.98x = 73,444,779.83
5. Step 5: Solve for x
   x = 73,444,779.83/12,300.98
6. Step 6: Final answer
   x = 5,970.65