Finding the Fourth Proportional to 3,973.31, 5,485.69 and 2,557.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973.31 : 5,485.69 = 2,557.53 : x
2. Step 2: Convert to fraction form
   3,973.31/5,485.69 = 2,557.53/x
3. Step 3: Cross multiply
   3,973.31x = 5,485.69 × 2,557.53
4. Step 4: Simplify right side
   3,973.31x = 14,029,816.75
5. Step 5: Solve for x
   x = 14,029,816.75/3,973.31
6. Step 6: Final answer
   x = 3,531.01