Finding the Fourth Proportional to 10,665.84, 16,003.62 and 5,475.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.84 : 16,003.62 = 5,475.36 : x
2. Step 2: Convert to fraction form
   10,665.84/16,003.62 = 5,475.36/x
3. Step 3: Cross multiply
   10,665.84x = 16,003.62 × 5,475.36
4. Step 4: Simplify right side
   10,665.84x = 87,625,580.80
5. Step 5: Solve for x
   x = 87,625,580.80/10,665.84
6. Step 6: Final answer
   x = 8,215.53