Finding the Fourth Proportional to 9,971.87, 13,761.78 and 5,495.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971.87 : 13,761.78 = 5,495.61 : x
2. Step 2: Convert to fraction form
   9,971.87/13,761.78 = 5,495.61/x
3. Step 3: Cross multiply
   9,971.87x = 13,761.78 × 5,495.61
4. Step 4: Simplify right side
   9,971.87x = 75,629,375.79
5. Step 5: Solve for x
   x = 75,629,375.79/9,971.87
6. Step 6: Final answer
   x = 7,584.28