Finding the Fourth Proportional to 9,911.42, 14,864.78 and 2,889.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,911.42 : 14,864.78 = 2,889.62 : x
2. Step 2: Convert to fraction form
   9,911.42/14,864.78 = 2,889.62/x
3. Step 3: Cross multiply
   9,911.42x = 14,864.78 × 2,889.62
4. Step 4: Simplify right side
   9,911.42x = 42,953,565.58
5. Step 5: Solve for x
   x = 42,953,565.58/9,911.42
6. Step 6: Final answer
   x = 4,333.74