Finding the Fourth Proportional to 9,031.54, 13,543.81 and 3,107.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,031.54 : 13,543.81 = 3,107.31 : x
2. Step 2: Convert to fraction form
   9,031.54/13,543.81 = 3,107.31/x
3. Step 3: Cross multiply
   9,031.54x = 13,543.81 × 3,107.31
4. Step 4: Simplify right side
   9,031.54x = 42,084,816.25
5. Step 5: Solve for x
   x = 42,084,816.25/9,031.54
6. Step 6: Final answer
   x = 4,659.76