Finding the Fourth Proportional to 13,632.18, 18,811.35 and 7,662.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,632.18 : 18,811.35 = 7,662.69 : x
2. Step 2: Convert to fraction form
   13,632.18/18,811.35 = 7,662.69/x
3. Step 3: Cross multiply
   13,632.18x = 18,811.35 × 7,662.69
4. Step 4: Simplify right side
   13,632.18x = 144,145,543.53
5. Step 5: Solve for x
   x = 144,145,543.53/13,632.18
6. Step 6: Final answer
   x = 10,573.92