Finding the Fourth Proportional to 13,348.63, 18,422.46 and 7,683.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,348.63 : 18,422.46 = 7,683.61 : x
2. Step 2: Convert to fraction form
   13,348.63/18,422.46 = 7,683.61/x
3. Step 3: Cross multiply
   13,348.63x = 18,422.46 × 7,683.61
4. Step 4: Simplify right side
   13,348.63x = 141,550,997.88
5. Step 5: Solve for x
   x = 141,550,997.88/13,348.63
6. Step 6: Final answer
   x = 10,604.16