Finding the Fourth Proportional to 9,872.81, 14,811.56 and 2,947.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.81 : 14,811.56 = 2,947.49 : x
2. Step 2: Convert to fraction form
   9,872.81/14,811.56 = 2,947.49/x
3. Step 3: Cross multiply
   9,872.81x = 14,811.56 × 2,947.49
4. Step 4: Simplify right side
   9,872.81x = 43,656,958.33
5. Step 5: Solve for x
   x = 43,656,958.33/9,872.81
6. Step 6: Final answer
   x = 4,421.94