Finding the Fourth Proportional to 3,663.34, 5,055.42 and 2,171.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.34 : 5,055.42 = 2,171.98 : x
2. Step 2: Convert to fraction form
   3,663.34/5,055.42 = 2,171.98/x
3. Step 3: Cross multiply
   3,663.34x = 5,055.42 × 2,171.98
4. Step 4: Simplify right side
   3,663.34x = 10,980,271.13
5. Step 5: Solve for x
   x = 10,980,271.13/3,663.34
6. Step 6: Final answer
   x = 2,997.34