Finding the Fourth Proportional to 12,102.21, 18,141.84 and 5,524.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,102.21 : 18,141.84 = 5,524.47 : x
2. Step 2: Convert to fraction form
   12,102.21/18,141.84 = 5,524.47/x
3. Step 3: Cross multiply
   12,102.21x = 18,141.84 × 5,524.47
4. Step 4: Simplify right side
   12,102.21x = 100,224,050.82
5. Step 5: Solve for x
   x = 100,224,050.82/12,102.21
6. Step 6: Final answer
   x = 8,281.47