Finding the Fourth Proportional to 7,031.07, 9,702.89 and 3,887.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,031.07 : 9,702.89 = 3,887.25 : x
2. Step 2: Convert to fraction form
   7,031.07/9,702.89 = 3,887.25/x
3. Step 3: Cross multiply
   7,031.07x = 9,702.89 × 3,887.25
4. Step 4: Simplify right side
   7,031.07x = 37,717,539.72
5. Step 5: Solve for x
   x = 37,717,539.72/7,031.07
6. Step 6: Final answer
   x = 5,364.41