Finding the Fourth Proportional to 12,171.96, 18,261.15 and 3,852.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171.96 : 18,261.15 = 3,852.11 : x
2. Step 2: Convert to fraction form
   12,171.96/18,261.15 = 3,852.11/x
3. Step 3: Cross multiply
   12,171.96x = 18,261.15 × 3,852.11
4. Step 4: Simplify right side
   12,171.96x = 70,343,867.22
5. Step 5: Solve for x
   x = 70,343,867.22/12,171.96
6. Step 6: Final answer
   x = 5,779.17