Finding the Fourth Proportional to 9,439.71, 14,147.31 and 3,886.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,439.71 : 14,147.31 = 3,886.74 : x
2. Step 2: Convert to fraction form
   9,439.71/14,147.31 = 3,886.74/x
3. Step 3: Cross multiply
   9,439.71x = 14,147.31 × 3,886.74
4. Step 4: Simplify right side
   9,439.71x = 54,986,915.67
5. Step 5: Solve for x
   x = 54,986,915.67/9,439.71
6. Step 6: Final answer
   x = 5,825.06