Finding the Fourth Proportional to 10,428.70, 14,380.32 and 7,443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,428.70 : 14,380.32 = 7,443.31 : x
2. Step 2: Convert to fraction form
   10,428.70/14,380.32 = 7,443.31/x
3. Step 3: Cross multiply
   10,428.70x = 14,380.32 × 7,443.31
4. Step 4: Simplify right side
   10,428.70x = 107,037,179.66
5. Step 5: Solve for x
   x = 107,037,179.66/10,428.70
6. Step 6: Final answer
   x = 10,263.71