Finding the Fourth Proportional to 3,886.86, 5,359.63 and 2,625.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.86 : 5,359.63 = 2,625.72 : x
2. Step 2: Convert to fraction form
   3,886.86/5,359.63 = 2,625.72/x
3. Step 3: Cross multiply
   3,886.86x = 5,359.63 × 2,625.72
4. Step 4: Simplify right side
   3,886.86x = 14,072,874.56
5. Step 5: Solve for x
   x = 14,072,874.56/3,886.86
6. Step 6: Final answer
   x = 3,620.63