Finding the Fourth Proportional to 13,174.61, 18,180.57 and 7,206.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,174.61 : 18,180.57 = 7,206.15 : x
2. Step 2: Convert to fraction form
   13,174.61/18,180.57 = 7,206.15/x
3. Step 3: Cross multiply
   13,174.61x = 18,180.57 × 7,206.15
4. Step 4: Simplify right side
   13,174.61x = 131,011,914.51
5. Step 5: Solve for x
   x = 131,011,914.51/13,174.61
6. Step 6: Final answer
   x = 9,944.28