Finding the Fourth Proportional to 11,724.81, 17,591.28 and 5,150.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,724.81 : 17,591.28 = 5,150.08 : x
2. Step 2: Convert to fraction form
   11,724.81/17,591.28 = 5,150.08/x
3. Step 3: Cross multiply
   11,724.81x = 17,591.28 × 5,150.08
4. Step 4: Simplify right side
   11,724.81x = 90,596,499.30
5. Step 5: Solve for x
   x = 90,596,499.30/11,724.81
6. Step 6: Final answer
   x = 7,726.91