Finding the Fourth Proportional to 8,665.08, 13,009.86 and 5,382.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.08 : 13,009.86 = 5,382.24 : x
2. Step 2: Convert to fraction form
   8,665.08/13,009.86 = 5,382.24/x
3. Step 3: Cross multiply
   8,665.08x = 13,009.86 × 5,382.24
4. Step 4: Simplify right side
   8,665.08x = 70,022,188.89
5. Step 5: Solve for x
   x = 70,022,188.89/8,665.08
6. Step 6: Final answer
   x = 8,080.96