Finding the Fourth Proportional to 7,031.31, 9,703.71 and 3,887.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,031.31 : 9,703.71 = 3,887.43 : x
2. Step 2: Convert to fraction form
   7,031.31/9,703.71 = 3,887.43/x
3. Step 3: Cross multiply
   7,031.31x = 9,703.71 × 3,887.43
4. Step 4: Simplify right side
   7,031.31x = 37,722,493.37
5. Step 5: Solve for x
   x = 37,722,493.37/7,031.31
6. Step 6: Final answer
   x = 5,364.93