Finding the Fourth Proportional to 11,757.06, 17,621.69 and 5,169.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,757.06 : 17,621.69 = 5,169.47 : x
2. Step 2: Convert to fraction form
   11,757.06/17,621.69 = 5,169.47/x
3. Step 3: Cross multiply
   11,757.06x = 17,621.69 × 5,169.47
4. Step 4: Simplify right side
   11,757.06x = 91,094,683.85
5. Step 5: Solve for x
   x = 91,094,683.85/11,757.06
6. Step 6: Final answer
   x = 7,748.08