Finding the Fourth Proportional to 7,617.61, 11,419.55 and 2,686.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,617.61 : 11,419.55 = 2,686.37 : x
2. Step 2: Convert to fraction form
   7,617.61/11,419.55 = 2,686.37/x
3. Step 3: Cross multiply
   7,617.61x = 11,419.55 × 2,686.37
4. Step 4: Simplify right side
   7,617.61x = 30,677,123.10
5. Step 5: Solve for x
   x = 30,677,123.10/7,617.61
6. Step 6: Final answer
   x = 4,027.13