Finding the Fourth Proportional to 9,880.91, 13,635.34 and 5,404.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880.91 : 13,635.34 = 5,404.70 : x
2. Step 2: Convert to fraction form
   9,880.91/13,635.34 = 5,404.70/x
3. Step 3: Cross multiply
   9,880.91x = 13,635.34 × 5,404.70
4. Step 4: Simplify right side
   9,880.91x = 73,694,904.33
5. Step 5: Solve for x
   x = 73,694,904.33/9,880.91
6. Step 6: Final answer
   x = 7,458.31