Finding the Fourth Proportional to 10,631.82, 14,669.18 and 5,915.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,631.82 : 14,669.18 = 5,915.20 : x
2. Step 2: Convert to fraction form
   10,631.82/14,669.18 = 5,915.20/x
3. Step 3: Cross multiply
   10,631.82x = 14,669.18 × 5,915.20
4. Step 4: Simplify right side
   10,631.82x = 86,771,133.54
5. Step 5: Solve for x
   x = 86,771,133.54/10,631.82
6. Step 6: Final answer
   x = 8,161.46