Finding the Fourth Proportional to 13,053.35, 18,013.43 and 7,389.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,053.35 : 18,013.43 = 7,389.18 : x
2. Step 2: Convert to fraction form
   13,053.35/18,013.43 = 7,389.18/x
3. Step 3: Cross multiply
   13,053.35x = 18,013.43 × 7,389.18
4. Step 4: Simplify right side
   13,053.35x = 133,104,495.16
5. Step 5: Solve for x
   x = 133,104,495.16/13,053.35
6. Step 6: Final answer
   x = 10,196.96