Finding the Fourth Proportional to 5,519.88, 7,615.89 and 5,242.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,519.88 : 7,615.89 = 5,242.86 : x
2. Step 2: Convert to fraction form
   5,519.88/7,615.89 = 5,242.86/x
3. Step 3: Cross multiply
   5,519.88x = 7,615.89 × 5,242.86
4. Step 4: Simplify right side
   5,519.88x = 39,929,045.05
5. Step 5: Solve for x
   x = 39,929,045.05/5,519.88
6. Step 6: Final answer
   x = 7,233.68