Finding the Fourth Proportional to 9,172.33, 12,663.81 and 5,774.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.33 : 12,663.81 = 5,774.28 : x
2. Step 2: Convert to fraction form
   9,172.33/12,663.81 = 5,774.28/x
3. Step 3: Cross multiply
   9,172.33x = 12,663.81 × 5,774.28
4. Step 4: Simplify right side
   9,172.33x = 73,124,384.81
5. Step 5: Solve for x
   x = 73,124,384.81/9,172.33
6. Step 6: Final answer
   x = 7,972.28