Finding the Fourth Proportional to 10,389.18, 14,355.81 and 7,399.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.18 : 14,355.81 = 7,399.83 : x
2. Step 2: Convert to fraction form
   10,389.18/14,355.81 = 7,399.83/x
3. Step 3: Cross multiply
   10,389.18x = 14,355.81 × 7,399.83
4. Step 4: Simplify right side
   10,389.18x = 106,230,553.51
5. Step 5: Solve for x
   x = 106,230,553.51/10,389.18
6. Step 6: Final answer
   x = 10,225.11