Finding the Fourth Proportional to 9,788.06, 13,507.40 and 5,539.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788.06 : 13,507.40 = 5,539.41 : x
2. Step 2: Convert to fraction form
   9,788.06/13,507.40 = 5,539.41/x
3. Step 3: Cross multiply
   9,788.06x = 13,507.40 × 5,539.41
4. Step 4: Simplify right side
   9,788.06x = 74,822,998.94
5. Step 5: Solve for x
   x = 74,822,998.94/9,788.06
6. Step 6: Final answer
   x = 7,644.32