Finding the Fourth Proportional to 13,577.88, 18,735.60 and 7,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,577.88 : 18,735.60 = 7,608.72 : x
2. Step 2: Convert to fraction form
   13,577.88/18,735.60 = 7,608.72/x
3. Step 3: Cross multiply
   13,577.88x = 18,735.60 × 7,608.72
4. Step 4: Simplify right side
   13,577.88x = 142,553,934.43
5. Step 5: Solve for x
   x = 142,553,934.43/13,577.88
6. Step 6: Final answer
   x = 10,498.98