Finding the Fourth Proportional to 9,736.56, 13,436.46 and 5,260.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,736.56 : 13,436.46 = 5,260.31 : x
2. Step 2: Convert to fraction form
   9,736.56/13,436.46 = 5,260.31/x
3. Step 3: Cross multiply
   9,736.56x = 13,436.46 × 5,260.31
4. Step 4: Simplify right side
   9,736.56x = 70,679,971.36
5. Step 5: Solve for x
   x = 70,679,971.36/9,736.56
6. Step 6: Final answer
   x = 7,259.23