Finding the Fourth Proportional to 3,786.86, 5,224.20 and 2,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.86 : 5,224.20 = 2,526.72 : x
2. Step 2: Convert to fraction form
   3,786.86/5,224.20 = 2,526.72/x
3. Step 3: Cross multiply
   3,786.86x = 5,224.20 × 2,526.72
4. Step 4: Simplify right side
   3,786.86x = 13,200,090.62
5. Step 5: Solve for x
   x = 13,200,090.62/3,786.86
6. Step 6: Final answer
   x = 3,485.76