Finding the Fourth Proportional to 7,336.31, 10,999.82 and 3,117.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,336.31 : 10,999.82 = 3,117.31 : x
2. Step 2: Convert to fraction form
   7,336.31/10,999.82 = 3,117.31/x
3. Step 3: Cross multiply
   7,336.31x = 10,999.82 × 3,117.31
4. Step 4: Simplify right side
   7,336.31x = 34,289,829.18
5. Step 5: Solve for x
   x = 34,289,829.18/7,336.31
6. Step 6: Final answer
   x = 4,673.99