Finding the Fourth Proportional to 7,647.22, 10,553.98 and 4,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,647.22 : 10,553.98 = 4,290.34 : x
2. Step 2: Convert to fraction form
   7,647.22/10,553.98 = 4,290.34/x
3. Step 3: Cross multiply
   7,647.22x = 10,553.98 × 4,290.34
4. Step 4: Simplify right side
   7,647.22x = 45,280,162.55
5. Step 5: Solve for x
   x = 45,280,162.55/7,647.22
6. Step 6: Final answer
   x = 5,921.13