Finding the Fourth Proportional to 11,595.98, 15,997.20 and 7,118.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,595.98 : 15,997.20 = 7,118.09 : x
2. Step 2: Convert to fraction form
   11,595.98/15,997.20 = 7,118.09/x
3. Step 3: Cross multiply
   11,595.98x = 15,997.20 × 7,118.09
4. Step 4: Simplify right side
   11,595.98x = 113,869,552.64
5. Step 5: Solve for x
   x = 113,869,552.64/11,595.98
6. Step 6: Final answer
   x = 9,819.75