Finding the Fourth Proportional to 13,179.30, 18,186.92 and 7,210.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,179.30 : 18,186.92 = 7,210.82 : x
2. Step 2: Convert to fraction form
   13,179.30/18,186.92 = 7,210.82/x
3. Step 3: Cross multiply
   13,179.30x = 18,186.92 × 7,210.82
4. Step 4: Simplify right side
   13,179.30x = 131,142,606.47
5. Step 5: Solve for x
   x = 131,142,606.47/13,179.30
6. Step 6: Final answer
   x = 9,950.65