Finding the Fourth Proportional to 8,165.88, 12,250.65 and 2,619.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,165.88 : 12,250.65 = 2,619.72 : x
2. Step 2: Convert to fraction form
   8,165.88/12,250.65 = 2,619.72/x
3. Step 3: Cross multiply
   8,165.88x = 12,250.65 × 2,619.72
4. Step 4: Simplify right side
   8,165.88x = 32,093,272.82
5. Step 5: Solve for x
   x = 32,093,272.82/8,165.88
6. Step 6: Final answer
   x = 3,930.17