Finding the Fourth Proportional to 12,176.61, 18,250.59 and 5,505.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,176.61 : 18,250.59 = 5,505.35 : x
2. Step 2: Convert to fraction form
   12,176.61/18,250.59 = 5,505.35/x
3. Step 3: Cross multiply
   12,176.61x = 18,250.59 × 5,505.35
4. Step 4: Simplify right side
   12,176.61x = 100,475,815.05
5. Step 5: Solve for x
   x = 100,475,815.05/12,176.61
6. Step 6: Final answer
   x = 8,251.55