Finding the Fourth Proportional to 9,172.32, 12,665.55 and 5,821.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.32 : 12,665.55 = 5,821.08 : x
2. Step 2: Convert to fraction form
   9,172.32/12,665.55 = 5,821.08/x
3. Step 3: Cross multiply
   9,172.32x = 12,665.55 × 5,821.08
4. Step 4: Simplify right side
   9,172.32x = 73,727,179.79
5. Step 5: Solve for x
   x = 73,727,179.79/9,172.32
6. Step 6: Final answer
   x = 8,038.01