Finding the Fourth Proportional to 3,811.86, 5,256.50 and 2,552.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,811.86 : 5,256.50 = 2,552.72 : x
2. Step 2: Convert to fraction form
   3,811.86/5,256.50 = 2,552.72/x
3. Step 3: Cross multiply
   3,811.86x = 5,256.50 × 2,552.72
4. Step 4: Simplify right side
   3,811.86x = 13,418,333.63
5. Step 5: Solve for x
   x = 13,418,333.63/3,811.86
6. Step 6: Final answer
   x = 3,520.15