Finding the Fourth Proportional to 3,502.47, 5,248.31 and 2,620.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,502.47 : 5,248.31 = 2,620.83 : x
2. Step 2: Convert to fraction form
   3,502.47/5,248.31 = 2,620.83/x
3. Step 3: Cross multiply
   3,502.47x = 5,248.31 × 2,620.83
4. Step 4: Simplify right side
   3,502.47x = 13,754,928.30
5. Step 5: Solve for x
   x = 13,754,928.30/3,502.47
6. Step 6: Final answer
   x = 3,927.21