Finding the Fourth Proportional to 13,322.88, 18,384.59 and 7,657.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.88 : 18,384.59 = 7,657.63 : x
2. Step 2: Convert to fraction form
   13,322.88/18,384.59 = 7,657.63/x
3. Step 3: Cross multiply
   13,322.88x = 18,384.59 × 7,657.63
4. Step 4: Simplify right side
   13,322.88x = 140,782,361.10
5. Step 5: Solve for x
   x = 140,782,361.10/13,322.88
6. Step 6: Final answer
   x = 10,566.96