Finding the Fourth Proportional to 5,479.98, 7,561.89 and 3,090.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,479.98 : 7,561.89 = 3,090.12 : x
2. Step 2: Convert to fraction form
   5,479.98/7,561.89 = 3,090.12/x
3. Step 3: Cross multiply
   5,479.98x = 7,561.89 × 3,090.12
4. Step 4: Simplify right side
   5,479.98x = 23,367,147.53
5. Step 5: Solve for x
   x = 23,367,147.53/5,479.98
6. Step 6: Final answer
   x = 4,264.09