Finding the Fourth Proportional to 3,380.55, 5,070.96 and 2,726.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.55 : 5,070.96 = 2,726.30 : x
2. Step 2: Convert to fraction form
   3,380.55/5,070.96 = 2,726.30/x
3. Step 3: Cross multiply
   3,380.55x = 5,070.96 × 2,726.30
4. Step 4: Simplify right side
   3,380.55x = 13,824,932.89
5. Step 5: Solve for x
   x = 13,824,932.89/3,380.55
6. Step 6: Final answer
   x = 4,089.55