Finding the Fourth Proportional to 9,571.76, 13,206.53 and 5,590.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,571.76 : 13,206.53 = 5,590.61 : x
2. Step 2: Convert to fraction form
   9,571.76/13,206.53 = 5,590.61/x
3. Step 3: Cross multiply
   9,571.76x = 13,206.53 × 5,590.61
4. Step 4: Simplify right side
   9,571.76x = 73,832,464.70
5. Step 5: Solve for x
   x = 73,832,464.70/9,571.76
6. Step 6: Final answer
   x = 7,713.58