Finding the Fourth Proportional to 9,870.80, 14,806.38 and 2,851.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.80 : 14,806.38 = 2,851.34 : x
2. Step 2: Convert to fraction form
   9,870.80/14,806.38 = 2,851.34/x
3. Step 3: Cross multiply
   9,870.80x = 14,806.38 × 2,851.34
4. Step 4: Simplify right side
   9,870.80x = 42,218,023.55
5. Step 5: Solve for x
   x = 42,218,023.55/9,870.80
6. Step 6: Final answer
   x = 4,277.06