Finding the Fourth Proportional to 7,642.55, 11,448.42 and 4,859.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,642.55 : 11,448.42 = 4,859.25 : x
2. Step 2: Convert to fraction form
   7,642.55/11,448.42 = 4,859.25/x
3. Step 3: Cross multiply
   7,642.55x = 11,448.42 × 4,859.25
4. Step 4: Simplify right side
   7,642.55x = 55,630,734.89
5. Step 5: Solve for x
   x = 55,630,734.89/7,642.55
6. Step 6: Final answer
   x = 7,279.09