Finding the Fourth Proportional to 11,406.56, 17,099.84 and 5,480.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,406.56 : 17,099.84 = 5,480.48 : x
2. Step 2: Convert to fraction form
   11,406.56/17,099.84 = 5,480.48/x
3. Step 3: Cross multiply
   11,406.56x = 17,099.84 × 5,480.48
4. Step 4: Simplify right side
   11,406.56x = 93,715,387.57
5. Step 5: Solve for x
   x = 93,715,387.57/11,406.56
6. Step 6: Final answer
   x = 8,215.92