Finding the Fourth Proportional to 9,120.52, 12,590.58 and 5,765.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.52 : 12,590.58 = 5,765.32 : x
2. Step 2: Convert to fraction form
   9,120.52/12,590.58 = 5,765.32/x
3. Step 3: Cross multiply
   9,120.52x = 12,590.58 × 5,765.32
4. Step 4: Simplify right side
   9,120.52x = 72,588,722.69
5. Step 5: Solve for x
   x = 72,588,722.69/9,120.52
6. Step 6: Final answer
   x = 7,958.84