Finding the Fourth Proportional to 3,501.57, 5,247.68 and 2,572.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,501.57 : 5,247.68 = 2,572.77 : x
2. Step 2: Convert to fraction form
   3,501.57/5,247.68 = 2,572.77/x
3. Step 3: Cross multiply
   3,501.57x = 5,247.68 × 2,572.77
4. Step 4: Simplify right side
   3,501.57x = 13,501,060.81
5. Step 5: Solve for x
   x = 13,501,060.81/3,501.57
6. Step 6: Final answer
   x = 3,855.72