Finding the Fourth Proportional to 13,173.86, 18,181.64 and 8,140.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,173.86 : 18,181.64 = 8,140.52 : x
2. Step 2: Convert to fraction form
   13,173.86/18,181.64 = 8,140.52/x
3. Step 3: Cross multiply
   13,173.86x = 18,181.64 × 8,140.52
4. Step 4: Simplify right side
   13,173.86x = 148,008,069.86
5. Step 5: Solve for x
   x = 148,008,069.86/13,173.86
6. Step 6: Final answer
   x = 11,234.98