Finding the Fourth Proportional to 12,181.53, 18,272.27 and 4,780.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,181.53 : 18,272.27 = 4,780.82 : x
2. Step 2: Convert to fraction form
   12,181.53/18,272.27 = 4,780.82/x
3. Step 3: Cross multiply
   12,181.53x = 18,272.27 × 4,780.82
4. Step 4: Simplify right side
   12,181.53x = 87,356,336.52
5. Step 5: Solve for x
   x = 87,356,336.52/12,181.53
6. Step 6: Final answer
   x = 7,171.21