Finding the Fourth Proportional to 13,169.33, 18,173.69 and 7,201.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,169.33 : 18,173.69 = 7,201.05 : x
2. Step 2: Convert to fraction form
   13,169.33/18,173.69 = 7,201.05/x
3. Step 3: Cross multiply
   13,169.33x = 18,173.69 × 7,201.05
4. Step 4: Simplify right side
   13,169.33x = 130,869,614.37
5. Step 5: Solve for x
   x = 130,869,614.37/13,169.33
6. Step 6: Final answer
   x = 9,937.45