Finding the Fourth Proportional to 9,946.81, 13,724.52 and 5,915.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,946.81 : 13,724.52 = 5,915.07 : x
2. Step 2: Convert to fraction form
   9,946.81/13,724.52 = 5,915.07/x
3. Step 3: Cross multiply
   9,946.81x = 13,724.52 × 5,915.07
4. Step 4: Simplify right side
   9,946.81x = 81,181,496.52
5. Step 5: Solve for x
   x = 81,181,496.52/9,946.81
6. Step 6: Final answer
   x = 8,161.56