Finding the Fourth Proportional to 7,227.31, 9,973.69 and 3,915.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,227.31 : 9,973.69 = 3,915.31 : x
2. Step 2: Convert to fraction form
   7,227.31/9,973.69 = 3,915.31/x
3. Step 3: Cross multiply
   7,227.31x = 9,973.69 × 3,915.31
4. Step 4: Simplify right side
   7,227.31x = 39,050,088.19
5. Step 5: Solve for x
   x = 39,050,088.19/7,227.31
6. Step 6: Final answer
   x = 5,403.13