Finding the Fourth Proportional to 9,931.20, 14,898.42 and 3,357.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,931.20 : 14,898.42 = 3,357.78 : x
2. Step 2: Convert to fraction form
   9,931.20/14,898.42 = 3,357.78/x
3. Step 3: Cross multiply
   9,931.20x = 14,898.42 × 3,357.78
4. Step 4: Simplify right side
   9,931.20x = 50,025,616.71
5. Step 5: Solve for x
   x = 50,025,616.71/9,931.20
6. Step 6: Final answer
   x = 5,037.22