Finding the Fourth Proportional to 13,046.18, 18,003.62 and 7,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,046.18 : 18,003.62 = 7,380.96 : x
2. Step 2: Convert to fraction form
   13,046.18/18,003.62 = 7,380.96/x
3. Step 3: Cross multiply
   13,046.18x = 18,003.62 × 7,380.96
4. Step 4: Simplify right side
   13,046.18x = 132,883,999.08
5. Step 5: Solve for x
   x = 132,883,999.08/13,046.18
6. Step 6: Final answer
   x = 10,185.66