Finding the Fourth Proportional to 9,957.42, 14,931.87 and 3,380.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,957.42 : 14,931.87 = 3,380.63 : x
2. Step 2: Convert to fraction form
   9,957.42/14,931.87 = 3,380.63/x
3. Step 3: Cross multiply
   9,957.42x = 14,931.87 × 3,380.63
4. Step 4: Simplify right side
   9,957.42x = 50,479,053.02
5. Step 5: Solve for x
   x = 50,479,053.02/9,957.42
6. Step 6: Final answer
   x = 5,069.49