Finding the Fourth Proportional to 9,970.40, 13,759.31 and 5,494.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970.40 : 13,759.31 = 5,494.08 : x
2. Step 2: Convert to fraction form
   9,970.40/13,759.31 = 5,494.08/x
3. Step 3: Cross multiply
   9,970.40x = 13,759.31 × 5,494.08
4. Step 4: Simplify right side
   9,970.40x = 75,594,815.22
5. Step 5: Solve for x
   x = 75,594,815.22/9,970.40
6. Step 6: Final answer
   x = 7,581.93