Finding the Fourth Proportional to 10,007.40, 14,994.64 and 3,429.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.40 : 14,994.64 = 3,429.96 : x
2. Step 2: Convert to fraction form
   10,007.40/14,994.64 = 3,429.96/x
3. Step 3: Cross multiply
   10,007.40x = 14,994.64 × 3,429.96
4. Step 4: Simplify right side
   10,007.40x = 51,431,015.41
5. Step 5: Solve for x
   x = 51,431,015.41/10,007.40
6. Step 6: Final answer
   x = 5,139.30