Finding the Fourth Proportional to 7,647.10, 10,552.83 and 4,290.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,647.10 : 10,552.83 = 4,290.10 : x
2. Step 2: Convert to fraction form
   7,647.10/10,552.83 = 4,290.10/x
3. Step 3: Cross multiply
   7,647.10x = 10,552.83 × 4,290.10
4. Step 4: Simplify right side
   7,647.10x = 45,272,695.98
5. Step 5: Solve for x
   x = 45,272,695.98/7,647.10
6. Step 6: Final answer
   x = 5,920.24