Finding the Fourth Proportional to 9,788.09, 13,507.49 and 5,539.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788.09 : 13,507.49 = 5,539.12 : x
2. Step 2: Convert to fraction form
   9,788.09/13,507.49 = 5,539.12/x
3. Step 3: Cross multiply
   9,788.09x = 13,507.49 × 5,539.12
4. Step 4: Simplify right side
   9,788.09x = 74,819,608.01
5. Step 5: Solve for x
   x = 74,819,608.01/9,788.09
6. Step 6: Final answer
   x = 7,643.94