Finding the Fourth Proportional to 7,034.31, 9,706.86 and 3,890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,034.31 : 9,706.86 = 3,890.25 : x
2. Step 2: Convert to fraction form
   7,034.31/9,706.86 = 3,890.25/x
3. Step 3: Cross multiply
   7,034.31x = 9,706.86 × 3,890.25
4. Step 4: Simplify right side
   7,034.31x = 37,762,112.12
5. Step 5: Solve for x
   x = 37,762,112.12/7,034.31
6. Step 6: Final answer
   x = 5,368.28