Finding the Fourth Proportional to 9,687.18, 13,366.82 and 5,438.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,687.18 : 13,366.82 = 5,438.46 : x
2. Step 2: Convert to fraction form
   9,687.18/13,366.82 = 5,438.46/x
3. Step 3: Cross multiply
   9,687.18x = 13,366.82 × 5,438.46
4. Step 4: Simplify right side
   9,687.18x = 72,694,915.90
5. Step 5: Solve for x
   x = 72,694,915.90/9,687.18
6. Step 6: Final answer
   x = 7,504.24