Finding the Fourth Proportional to 7,074.09, 9,752.50 and 5,643.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,074.09 : 9,752.50 = 5,643.31 : x
2. Step 2: Convert to fraction form
   7,074.09/9,752.50 = 5,643.31/x
3. Step 3: Cross multiply
   7,074.09x = 9,752.50 × 5,643.31
4. Step 4: Simplify right side
   7,074.09x = 55,036,391.13
5. Step 5: Solve for x
   x = 55,036,391.13/7,074.09
6. Step 6: Final answer
   x = 7,779.99