Finding the Fourth Proportional to 9,880.82, 13,635.55 and 5,404.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880.82 : 13,635.55 = 5,404.56 : x
2. Step 2: Convert to fraction form
   9,880.82/13,635.55 = 5,404.56/x
3. Step 3: Cross multiply
   9,880.82x = 13,635.55 × 5,404.56
4. Step 4: Simplify right side
   9,880.82x = 73,694,148.11
5. Step 5: Solve for x
   x = 73,694,148.11/9,880.82
6. Step 6: Final answer
   x = 7,458.30