Finding the Fourth Proportional to 13,577.99, 18,736.61 and 7,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,577.99 : 18,736.61 = 7,608.50 : x
2. Step 2: Convert to fraction form
   13,577.99/18,736.61 = 7,608.50/x
3. Step 3: Cross multiply
   13,577.99x = 18,736.61 × 7,608.50
4. Step 4: Simplify right side
   13,577.99x = 142,557,365.46
5. Step 5: Solve for x
   x = 142,557,365.46/13,577.99
6. Step 6: Final answer
   x = 10,499.15