Finding the Fourth Proportional to 7,030.31, 9,702.33 and 3,886.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,030.31 : 9,702.33 = 3,886.43 : x
2. Step 2: Convert to fraction form
   7,030.31/9,702.33 = 3,886.43/x
3. Step 3: Cross multiply
   7,030.31x = 9,702.33 × 3,886.43
4. Step 4: Simplify right side
   7,030.31x = 37,707,426.38
5. Step 5: Solve for x
   x = 37,707,426.38/7,030.31
6. Step 6: Final answer
   x = 5,363.55