Finding the Fourth Proportional to 12,181.34, 18,271.62 and 5,159.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,181.34 : 18,271.62 = 5,159.48 : x
2. Step 2: Convert to fraction form
   12,181.34/18,271.62 = 5,159.48/x
3. Step 3: Cross multiply
   12,181.34x = 18,271.62 × 5,159.48
4. Step 4: Simplify right side
   12,181.34x = 94,272,057.96
5. Step 5: Solve for x
   x = 94,272,057.96/12,181.34
6. Step 6: Final answer
   x = 7,739.05