Finding the Fourth Proportional to 12,171.93, 18,250.84 and 4,767.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171.93 : 18,250.84 = 4,767.72 : x
2. Step 2: Convert to fraction form
   12,171.93/18,250.84 = 4,767.72/x
3. Step 3: Cross multiply
   12,171.93x = 18,250.84 × 4,767.72
4. Step 4: Simplify right side
   12,171.93x = 87,014,894.88
5. Step 5: Solve for x
   x = 87,014,894.88/12,171.93
6. Step 6: Final answer
   x = 7,148.82