Finding the Fourth Proportional to 5,615.34, 7,748.10 and 3,518.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615.34 : 7,748.10 = 3,518.25 : x
2. Step 2: Convert to fraction form
   5,615.34/7,748.10 = 3,518.25/x
3. Step 3: Cross multiply
   5,615.34x = 7,748.10 × 3,518.25
4. Step 4: Simplify right side
   5,615.34x = 27,259,752.83
5. Step 5: Solve for x
   x = 27,259,752.83/5,615.34
6. Step 6: Final answer
   x = 4,854.52