Finding the Fourth Proportional to 3,379.91, 5,071.38 and 2,147.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,379.91 : 5,071.38 = 2,147.00 : x
2. Step 2: Convert to fraction form
   3,379.91/5,071.38 = 2,147.00/x
3. Step 3: Cross multiply
   3,379.91x = 5,071.38 × 2,147.00
4. Step 4: Simplify right side
   3,379.91x = 10,888,227.50
5. Step 5: Solve for x
   x = 10,888,227.50/3,379.91
6. Step 6: Final answer
   x = 3,221.46