Finding the Fourth Proportional to 13,053.10, 18,013.22 and 7,387.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,053.10 : 18,013.22 = 7,387.69 : x
2. Step 2: Convert to fraction form
   13,053.10/18,013.22 = 7,387.69/x
3. Step 3: Cross multiply
   13,053.10x = 18,013.22 × 7,387.69
4. Step 4: Simplify right side
   13,053.10x = 133,075,995.20
5. Step 5: Solve for x
   x = 133,075,995.20/13,053.10
6. Step 6: Final answer
   x = 10,194.98