Finding the Fourth Proportional to 9,225.84, 12,731.81 and 5,246.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,225.84 : 12,731.81 = 5,246.31 : x
2. Step 2: Convert to fraction form
   9,225.84/12,731.81 = 5,246.31/x
3. Step 3: Cross multiply
   9,225.84x = 12,731.81 × 5,246.31
4. Step 4: Simplify right side
   9,225.84x = 66,794,995.89
5. Step 5: Solve for x
   x = 66,794,995.89/9,225.84
6. Step 6: Final answer
   x = 7,239.99