Finding the Fourth Proportional to 9,939.88, 14,911.42 and 3,012.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.88 : 14,911.42 = 3,012.76 : x
2. Step 2: Convert to fraction form
   9,939.88/14,911.42 = 3,012.76/x
3. Step 3: Cross multiply
   9,939.88x = 14,911.42 × 3,012.76
4. Step 4: Simplify right side
   9,939.88x = 44,924,529.72
5. Step 5: Solve for x
   x = 44,924,529.72/9,939.88
6. Step 6: Final answer
   x = 4,519.62