Finding the Fourth Proportional to 13,179.07, 18,186.96 and 7,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,179.07 : 18,186.96 = 7,210.72 : x
2. Step 2: Convert to fraction form
   13,179.07/18,186.96 = 7,210.72/x
3. Step 3: Cross multiply
   13,179.07x = 18,186.96 × 7,210.72
4. Step 4: Simplify right side
   13,179.07x = 131,141,076.21
5. Step 5: Solve for x
   x = 131,141,076.21/13,179.07
6. Step 6: Final answer
   x = 9,950.71