Finding the Fourth Proportional to 9,915.57, 13,687.79 and 5,935.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.57 : 13,687.79 = 5,935.95 : x
2. Step 2: Convert to fraction form
   9,915.57/13,687.79 = 5,935.95/x
3. Step 3: Cross multiply
   9,915.57x = 13,687.79 × 5,935.95
4. Step 4: Simplify right side
   9,915.57x = 81,250,007.37
5. Step 5: Solve for x
   x = 81,250,007.37/9,915.57
6. Step 6: Final answer
   x = 8,194.18