Finding the Fourth Proportional to 9,890.74, 14,834.78 and 2,775.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.74 : 14,834.78 = 2,775.50 : x
2. Step 2: Convert to fraction form
   9,890.74/14,834.78 = 2,775.50/x
3. Step 3: Cross multiply
   9,890.74x = 14,834.78 × 2,775.50
4. Step 4: Simplify right side
   9,890.74x = 41,173,931.89
5. Step 5: Solve for x
   x = 41,173,931.89/9,890.74
6. Step 6: Final answer
   x = 4,162.88