Finding the Fourth Proportional to 13,047.46, 18,005.34 and 7,382.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.46 : 18,005.34 = 7,382.12 : x
2. Step 2: Convert to fraction form
   13,047.46/18,005.34 = 7,382.12/x
3. Step 3: Cross multiply
   13,047.46x = 18,005.34 × 7,382.12
4. Step 4: Simplify right side
   13,047.46x = 132,917,580.52
5. Step 5: Solve for x
   x = 132,917,580.52/13,047.46
6. Step 6: Final answer
   x = 10,187.24