Finding the Fourth Proportional to 13,355.29, 18,429.98 and 7,386.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,355.29 : 18,429.98 = 7,386.83 : x
2. Step 2: Convert to fraction form
   13,355.29/18,429.98 = 7,386.83/x
3. Step 3: Cross multiply
   13,355.29x = 18,429.98 × 7,386.83
4. Step 4: Simplify right side
   13,355.29x = 136,139,138.30
5. Step 5: Solve for x
   x = 136,139,138.30/13,355.29
6. Step 6: Final answer
   x = 10,193.65