Finding the Fourth Proportional to 5,412.58, 7,458.86 and 3,618.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.58 : 7,458.86 = 3,618.04 : x
2. Step 2: Convert to fraction form
   5,412.58/7,458.86 = 3,618.04/x
3. Step 3: Cross multiply
   5,412.58x = 7,458.86 × 3,618.04
4. Step 4: Simplify right side
   5,412.58x = 26,986,453.83
5. Step 5: Solve for x
   x = 26,986,453.83/5,412.58
6. Step 6: Final answer
   x = 4,985.88