Finding the Fourth Proportional to 9,890.42, 14,835.69 and 3,317.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.42 : 14,835.69 = 3,317.12 : x
2. Step 2: Convert to fraction form
   9,890.42/14,835.69 = 3,317.12/x
3. Step 3: Cross multiply
   9,890.42x = 14,835.69 × 3,317.12
4. Step 4: Simplify right side
   9,890.42x = 49,211,764.01
5. Step 5: Solve for x
   x = 49,211,764.01/9,890.42
6. Step 6: Final answer
   x = 4,975.70