Finding the Fourth Proportional to 13,322.22, 18,385.62 and 7,657.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.22 : 18,385.62 = 7,657.89 : x
2. Step 2: Convert to fraction form
   13,322.22/18,385.62 = 7,657.89/x
3. Step 3: Cross multiply
   13,322.22x = 18,385.62 × 7,657.89
4. Step 4: Simplify right side
   13,322.22x = 140,795,055.54
5. Step 5: Solve for x
   x = 140,795,055.54/13,322.22
6. Step 6: Final answer
   x = 10,568.44